- WLUG - wlug.mailman3.com

Re: Debian question

by Bob George

"Chuck Homic" <chuck(a)vvisions.com> wrote: > Oh, hey... my Debian rant reminded me of something! > > I have Debian running on a 486-25 with 12MB of RAM. > [...] Hey, mind if I ask what you use it for? The reason I ask is that I'm on a list dedicated to old PC hardware users, which until recently equated to a base of fanatical DOS holdouts. Slowly though, most are inquiring about Linux, so I'd like to give them some useful info about using Debian as a "modern" distribution on low-resource systems. Unfortunately, I've had to dump most of my old systems, so can't speak from first-hand experience anymore. Stephen Darnold, the guy who put Basic Linux together, used to lurk there, and there was often extensive discussion on what could be run on older hardware. Yours sounds like the lower end of the spectrum, so I'm wondering how well it works. Would it work well with Debian specifically as a firewall/gateway? Would you say the benefits of running something current offsets the inconvenience of those delays with installs etc.? Thanks, - Bob

Oct. 3, 2003

Debian question

by Chuck Homic

Oh, hey... my Debian rant reminded me of something! I have Debian running on a 486-25 with 12MB of RAM. (Pause for laughter...) Okay. Now then. When I run dpkg (on its own, or via apt-get) it wants about 18M of RAM to work with. This causes a fair deal of thrashing, and if I just let it go, it takes about 30 minutes to install even the most basic package. My solution thus far is to use the NBD driver to mount a swap space over the network. This is actually faster because the swap and actual package install don't have to contend for precious HDD seek time, and I can install the most basic packages in about 10 minutes or so. Even so, it would be nice if it were a bit faster still. Anyone know what dpkg does with its RAM? Is it loading all the packges into memory to figure out dependencies and stuff? Any way to make it behave more efficiently? -Chuck

Oct. 3, 2003

Re: [Wlug] 1st posting: Worcester ISP? Distros? LAC?

by Chuck Homic

On Thu, Oct 02, 2003 at 09:57:58AM -0400, Gregory Avedissian wrote: > My experience with Debian 3.0 - > > The installer is archaic. First, you have to put in all four disks to be > read. Then you get to select a base package, then you get to fill in > more selections from a list of everything. You can use the arrow keys to > scroll up and down the list of over a thousand packages and the space [...] Ah, someone who hasn't learned the secret of dselect: Don't use it. :) To install debian, go and burn the bootable CD ISO image. After it installs the base system and launches dselect, find the key that exits immediately (I think it's 'x') and press it. (If you don't have access to a CD writer, you can put the base system on your FAT partition, and use the single boot floppy to access it.) You now have a bootable system with networking support. And you've done the hard part. From here on out, if you want anything just use "apt-get" (My first choice is usually "apt-get less" and other rediculously basic packages. Then, "apt-get x-window-system" which is an adventure and a half.) I like this method so much, because you have a system with only exactly what you want and nothing more. Which is good if your hard disk is 240M. But, of course there's a certain personality required to like Debian, because it certainly does nothing for you except install stuff with all its dependencies. Which is all I want in a distro to begin with. -Chuck

Oct. 3, 2003

Re: [Wlug] mail disaster recovery - success

by Richard Goodman

Many thanks, looks like the mail server backup is operational. The first two pieces of incoming mail after the fix were spam to invalid addresses at the domain, but they were properly queued by the backup server in mqueue. Anything special about getting the mail out when my home DSL (and server) come back up in a few days. I was thinking of possibly moving the queued mail to a temporary directory a few times a day to cut down on needless retries before the DSL is restored. Any thoughts? Dick At 03:57 PM 10/2/2003 -0400, you wrote: >sorry, > >the local-host-names file should be empty.. >only the access file should have RELAY. > >it is trying to recive mail on your host, but the accounts dont exist >on that box. > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > After 1-1/2 hours studying Oreilly/Sendmail & Oreilly/DNS&Bind, I stumbled > > upon the correct format for my MX records ... turns out they were all > wrong > > on a dozen domains on four servers. > > > > Now I have a new problem ... with the MX records working, the backup > server > > is starting to receive mail, but rejecting it all for "Unknown user" ... I > > thought the mail was to be queued for redelivery, not attempted to deliver > > to mailboxes on the backup server. What have I done wrong NOW? > > > > Dick > > > > At 02:04 PM 10/2/2003 -0400, you wrote: > > > > >you got 0 answer for your MX. your DNS is misconfigured. > > > > > >dig -t mx domain.com > > > > > >should in your case display at least 2 answers. your main server, and > > >your backup server > > > > > >for example: > > >dig -t mx wlug.org > > > > > >; <<>> DiG 9.2.1 <<>> -t mx wlug.org > > >;; global options: printcmd > > >;; Got answer: > > >;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63144 > > >;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 3, ADDITIONAL: 0 > > > > > >;; QUESTION SECTION: > > >;wlug.org. IN MX > > > > > >;; ANSWER SECTION: > > >wlug.org. 259200 IN MX 20 mx.WPI.EDU. > > >wlug.org. 259200 IN MX 10 smtp.WPI.EDU. > > > > > >;; AUTHORITY SECTION: > > >wlug.org. 259200 IN NS ns1.wlug.org. > > >wlug.org. 259200 IN NS alum.WPI.EDU. > > >wlug.org. 259200 IN NS > > >dns1.dovetailinternet.net. > > > > > >;; Query time: 110 msec > > >;; SERVER: 192.168.2.48#53(192.168.2.48) > > >;; WHEN: Thu Oct 2 14:02:48 2003 > > >;; MSG SIZE rcvd: 149 > > > > > > > > > > > >You might need to set your secondary DNS to be a master for your > > >domain. remember to restart the named. > > > > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > > > ; <<>> DiG 9.2.1 <<>> -t MX mydomain.net > > > > ;; global options: printcmd > > > > ;; Got answer: > > > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3412 > > > > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 > > > > > > > > ;; QUESTION SECTION: > > > > ;mydomain.net. IN MX > > > > > > > > ;; AUTHORITY SECTION: > > > > mydomain.net. 2924 IN SOA mydomain.net. > > > > rlg.bach.mydomain. > > > > net. 2003100202 10800 3600 604800 3600 > > > > > > > > ;; Query time: 7 msec > > > > ;; SERVER: 67.100.202.xxx#53(67.100.202.xxx) > > > > ;; WHEN: Thu Oct 2 13:47:15 2003 > > > > ;; MSG SIZE rcvd: 75 > > > > > > > > I'd already gotten that output but didn't see any MX output, just the > > > question. > > > > Your interpretation? Further suggestions? I'm losing mail at this > point, > > > > but would like to stop the hemorraging. The SOA serial# indicates > it is > > > the > > > > most recent version of the modified (secondary) DNS > > > > > > > > Dick > > > > > > > > At 01:37 PM 10/2/2003 -0400, you wrote: > > > > > > > > >do a: > > > > >dig -t MX domain.com > > > > > > > > > >should show you if the DNS is reporting the backup mail sever > > > > >correctly. > > > > > > > > > > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > > > > > > > Karl, > > > > > > That was exactly what I was looking for. > > > > > > Did the local-host-names changes; I already had the RELAY lines in > > > access > > > > > > on the backup machine. > > > > > > Since the primary DNS is on the down IP address, I modified the > > > secondary > > > > > > (slave) DNS which is one of my office boxes by adding a second > MX line: > > > > > > > > > > > > my-host MX 99 temp.server.domain. <--dot at end > > > > > > and restarted that named. > > > > > > > > > > > > > > > > > > Its been quite a while and I'm not seeing any mail queueing, > and I know > > > > > > there's mail that should be coming in on a regular basis. What else > > > > > might I > > > > > > have missed? > > > > > > > > > > > > What can I use (nslookup, dig ? with what parameters) to see > > > whether the > > > > > > MX lines are right? When I send a test email from an off-site > > > machine, the > > > > > > sending sendmail log says "Connection timed out" and shows the > down IP > > > > > address. > > > > > > > > > > > > Dick > > > > > > > > > > > > At 03:52 PM 10/1/2003 -0400, you wrote: > > > > > > > > > > > > >on the backup RH mail box: > > > > > > >add you domain to the backup /etc/mail/local-host-names and > set it > > > > > > >to relay in /etc/mail/access > > > > > > > > > > > > > >type make in the /etc/mail/ directory and restart sendmail. > > > > > > > > > > > > > >you can try testing it. send mail to your domian. also, > could telnet > > > > > > >to mailserver.com 25 and put SMTP comands to verify it is > accepting > > > > > > >mail for that domain. > > > > > > > > > > > > > >when it is buffering the mail, it should show up in > /var/spool/mail > > > > > > > > > > > > > >if your home DSL is going to be down for some time, you might just > > > > > > >want to bring the box into the office, and point the DNS > directly at > > > > > > >it, if you can. > > > > > > > > > > > > > > > > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > > > > > > > > > > > My home DSL has been down for over 48 hours and it appears > that it > > > > > will be > > > > > > > > down for several more days. (I spare you the gory details). > I am > > > > > concerned > > > > > > > > about losing mail coming into various domains at that site. > > > > > > > > That RH 7.3 machine runs mail/web/primary DNS for those > domains. > > > > > > > > > > > > > > > > I have modified the secondary DNS records for those > domains (on a > > > > > machine > > > > > > > > at my office - also on DSL) with an higher cost MX record > > > pointing to a > > > > > > > > machine at the office also running RH 7.3 and sendmail, > which I > > > assume > > > > > > > will > > > > > > > > pick up and queue the mail. The DNS TTLs are reasonably short, > > > > > fortunately. > > > > > > > > > > > > > > > > I've done this following O'Reilly/Sendmail book 2nd > edition, but > > > > > its not > > > > > > > > always crystal clear if you don't already understand > it! Is there > > > > > > > anything > > > > > > > > else I have to do on the backup machine (pointed to by the > new MX > > > > > > > records), > > > > > > > > particularly is there anything I have to do to its sendmail > config > > > > > files? > > > > > > > > > > > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > > > > > > > > > > > Dick > > > > > > > > > > > > _______________________________________________ > > > > Wlug mailing list > > > > Wlug(a)mail.wlug.org > > > > http://mail.wlug.org/mailman/listinfo/wlug > > > > > > > > > >-- > > > > > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > > >Karl Hiramoto <karl(a)hiramoto.org> > > >Work: 978-425-2090 ext 25 > > >Cell: 508-517-4819 > > >http://karl.hiramoto.org/ > > >AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto > > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > > > > > >People are always available for work in the past tense. > > > > > > > > >_______________________________________________ > > >Wlug mailing list > > >Wlug(a)mail.wlug.org > > >http://mail.wlug.org/mailman/listinfo/wlug > > > > > > _______________________________________________ > > Wlug mailing list > > Wlug(a)mail.wlug.org > > http://mail.wlug.org/mailman/listinfo/wlug > > > >-- > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø >Karl Hiramoto <karl(a)hiramoto.org> >Work: 978-425-2090 ext 25 >Cell: 508-517-4819 >http://karl.hiramoto.org/ >AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > >Beggar to well-dressed businessman: > "Could you spare $20.95 for a fifth of Chivas?" > > >_______________________________________________ >Wlug mailing list >Wlug(a)mail.wlug.org >http://mail.wlug.org/mailman/listinfo/wlug

Oct. 2, 2003

Re: [Wlug] mail disaster recovery

by Karl Hiramoto

sorry, the local-host-names file should be empty.. only the access file should have RELAY. it is trying to recive mail on your host, but the accounts dont exist on that box. On Thu, 2 Oct 2003, Richard Goodman wrote: > After 1-1/2 hours studying Oreilly/Sendmail & Oreilly/DNS&Bind, I stumbled > upon the correct format for my MX records ... turns out they were all wrong > on a dozen domains on four servers. > > Now I have a new problem ... with the MX records working, the backup server > is starting to receive mail, but rejecting it all for "Unknown user" ... I > thought the mail was to be queued for redelivery, not attempted to deliver > to mailboxes on the backup server. What have I done wrong NOW? > > Dick > > At 02:04 PM 10/2/2003 -0400, you wrote: > > >you got 0 answer for your MX. your DNS is misconfigured. > > > >dig -t mx domain.com > > > >should in your case display at least 2 answers. your main server, and > >your backup server > > > >for example: > >dig -t mx wlug.org > > > >; <<>> DiG 9.2.1 <<>> -t mx wlug.org > >;; global options: printcmd > >;; Got answer: > >;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63144 > >;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 3, ADDITIONAL: 0 > > > >;; QUESTION SECTION: > >;wlug.org. IN MX > > > >;; ANSWER SECTION: > >wlug.org. 259200 IN MX 20 mx.WPI.EDU. > >wlug.org. 259200 IN MX 10 smtp.WPI.EDU. > > > >;; AUTHORITY SECTION: > >wlug.org. 259200 IN NS ns1.wlug.org. > >wlug.org. 259200 IN NS alum.WPI.EDU. > >wlug.org. 259200 IN NS > >dns1.dovetailinternet.net. > > > >;; Query time: 110 msec > >;; SERVER: 192.168.2.48#53(192.168.2.48) > >;; WHEN: Thu Oct 2 14:02:48 2003 > >;; MSG SIZE rcvd: 149 > > > > > > > >You might need to set your secondary DNS to be a master for your > >domain. remember to restart the named. > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > ; <<>> DiG 9.2.1 <<>> -t MX mydomain.net > > > ;; global options: printcmd > > > ;; Got answer: > > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3412 > > > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 > > > > > > ;; QUESTION SECTION: > > > ;mydomain.net. IN MX > > > > > > ;; AUTHORITY SECTION: > > > mydomain.net. 2924 IN SOA mydomain.net. > > > rlg.bach.mydomain. > > > net. 2003100202 10800 3600 604800 3600 > > > > > > ;; Query time: 7 msec > > > ;; SERVER: 67.100.202.xxx#53(67.100.202.xxx) > > > ;; WHEN: Thu Oct 2 13:47:15 2003 > > > ;; MSG SIZE rcvd: 75 > > > > > > I'd already gotten that output but didn't see any MX output, just the > > question. > > > Your interpretation? Further suggestions? I'm losing mail at this point, > > > but would like to stop the hemorraging. The SOA serial# indicates it is > > the > > > most recent version of the modified (secondary) DNS > > > > > > Dick > > > > > > At 01:37 PM 10/2/2003 -0400, you wrote: > > > > > > >do a: > > > >dig -t MX domain.com > > > > > > > >should show you if the DNS is reporting the backup mail sever > > > >correctly. > > > > > > > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > > > > > Karl, > > > > > That was exactly what I was looking for. > > > > > Did the local-host-names changes; I already had the RELAY lines in > > access > > > > > on the backup machine. > > > > > Since the primary DNS is on the down IP address, I modified the > > secondary > > > > > (slave) DNS which is one of my office boxes by adding a second MX line: > > > > > > > > > > my-host MX 99 temp.server.domain. <--dot at end > > > > > and restarted that named. > > > > > > > > > > > > > > > Its been quite a while and I'm not seeing any mail queueing, and I know > > > > > there's mail that should be coming in on a regular basis. What else > > > > might I > > > > > have missed? > > > > > > > > > > What can I use (nslookup, dig ? with what parameters) to see > > whether the > > > > > MX lines are right? When I send a test email from an off-site > > machine, the > > > > > sending sendmail log says "Connection timed out" and shows the down IP > > > > address. > > > > > > > > > > Dick > > > > > > > > > > At 03:52 PM 10/1/2003 -0400, you wrote: > > > > > > > > > > >on the backup RH mail box: > > > > > >add you domain to the backup /etc/mail/local-host-names and set it > > > > > >to relay in /etc/mail/access > > > > > > > > > > > >type make in the /etc/mail/ directory and restart sendmail. > > > > > > > > > > > >you can try testing it. send mail to your domian. also, could telnet > > > > > >to mailserver.com 25 and put SMTP comands to verify it is accepting > > > > > >mail for that domain. > > > > > > > > > > > >when it is buffering the mail, it should show up in /var/spool/mail > > > > > > > > > > > >if your home DSL is going to be down for some time, you might just > > > > > >want to bring the box into the office, and point the DNS directly at > > > > > >it, if you can. > > > > > > > > > > > > > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > > > > > > > > > My home DSL has been down for over 48 hours and it appears that it > > > > will be > > > > > > > down for several more days. (I spare you the gory details). I am > > > > concerned > > > > > > > about losing mail coming into various domains at that site. > > > > > > > That RH 7.3 machine runs mail/web/primary DNS for those domains. > > > > > > > > > > > > > > I have modified the secondary DNS records for those domains (on a > > > > machine > > > > > > > at my office - also on DSL) with an higher cost MX record > > pointing to a > > > > > > > machine at the office also running RH 7.3 and sendmail, which I > > assume > > > > > > will > > > > > > > pick up and queue the mail. The DNS TTLs are reasonably short, > > > > fortunately. > > > > > > > > > > > > > > I've done this following O'Reilly/Sendmail book 2nd edition, but > > > > its not > > > > > > > always crystal clear if you don't already understand it! Is there > > > > > > anything > > > > > > > else I have to do on the backup machine (pointed to by the new MX > > > > > > records), > > > > > > > particularly is there anything I have to do to its sendmail config > > > > files? > > > > > > > > > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > > > > > > > > > Dick > > > > > > > > > _______________________________________________ > > > Wlug mailing list > > > Wlug(a)mail.wlug.org > > > http://mail.wlug.org/mailman/listinfo/wlug > > > > > > >-- > > > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > >Karl Hiramoto <karl(a)hiramoto.org> > >Work: 978-425-2090 ext 25 > >Cell: 508-517-4819 > >http://karl.hiramoto.org/ > >AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > > > >People are always available for work in the past tense. > > > > > >_______________________________________________ > >Wlug mailing list > >Wlug(a)mail.wlug.org > >http://mail.wlug.org/mailman/listinfo/wlug > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø Karl Hiramoto <karl(a)hiramoto.org> Work: 978-425-2090 ext 25 Cell: 508-517-4819 http://karl.hiramoto.org/ AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø Beggar to well-dressed businessman: "Could you spare $20.95 for a fifth of Chivas?"

Oct. 2, 2003

Re: [Wlug] mail disaster recovery

by Richard Goodman

After 1-1/2 hours studying Oreilly/Sendmail & Oreilly/DNS&Bind, I stumbled upon the correct format for my MX records ... turns out they were all wrong on a dozen domains on four servers. Now I have a new problem ... with the MX records working, the backup server is starting to receive mail, but rejecting it all for "Unknown user" ... I thought the mail was to be queued for redelivery, not attempted to deliver to mailboxes on the backup server. What have I done wrong NOW? Dick At 02:04 PM 10/2/2003 -0400, you wrote: >you got 0 answer for your MX. your DNS is misconfigured. > >dig -t mx domain.com > >should in your case display at least 2 answers. your main server, and >your backup server > >for example: >dig -t mx wlug.org > >; <<>> DiG 9.2.1 <<>> -t mx wlug.org >;; global options: printcmd >;; Got answer: >;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63144 >;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 3, ADDITIONAL: 0 > >;; QUESTION SECTION: >;wlug.org. IN MX > >;; ANSWER SECTION: >wlug.org. 259200 IN MX 20 mx.WPI.EDU. >wlug.org. 259200 IN MX 10 smtp.WPI.EDU. > >;; AUTHORITY SECTION: >wlug.org. 259200 IN NS ns1.wlug.org. >wlug.org. 259200 IN NS alum.WPI.EDU. >wlug.org. 259200 IN NS >dns1.dovetailinternet.net. > >;; Query time: 110 msec >;; SERVER: 192.168.2.48#53(192.168.2.48) >;; WHEN: Thu Oct 2 14:02:48 2003 >;; MSG SIZE rcvd: 149 > > > >You might need to set your secondary DNS to be a master for your >domain. remember to restart the named. > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > ; <<>> DiG 9.2.1 <<>> -t MX mydomain.net > > ;; global options: printcmd > > ;; Got answer: > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3412 > > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 > > > > ;; QUESTION SECTION: > > ;mydomain.net. IN MX > > > > ;; AUTHORITY SECTION: > > mydomain.net. 2924 IN SOA mydomain.net. > > rlg.bach.mydomain. > > net. 2003100202 10800 3600 604800 3600 > > > > ;; Query time: 7 msec > > ;; SERVER: 67.100.202.xxx#53(67.100.202.xxx) > > ;; WHEN: Thu Oct 2 13:47:15 2003 > > ;; MSG SIZE rcvd: 75 > > > > I'd already gotten that output but didn't see any MX output, just the > question. > > Your interpretation? Further suggestions? I'm losing mail at this point, > > but would like to stop the hemorraging. The SOA serial# indicates it is > the > > most recent version of the modified (secondary) DNS > > > > Dick > > > > At 01:37 PM 10/2/2003 -0400, you wrote: > > > > >do a: > > >dig -t MX domain.com > > > > > >should show you if the DNS is reporting the backup mail sever > > >correctly. > > > > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > > > Karl, > > > > That was exactly what I was looking for. > > > > Did the local-host-names changes; I already had the RELAY lines in > access > > > > on the backup machine. > > > > Since the primary DNS is on the down IP address, I modified the > secondary > > > > (slave) DNS which is one of my office boxes by adding a second MX line: > > > > > > > > my-host MX 99 temp.server.domain. <--dot at end > > > > and restarted that named. > > > > > > > > > > > > Its been quite a while and I'm not seeing any mail queueing, and I know > > > > there's mail that should be coming in on a regular basis. What else > > > might I > > > > have missed? > > > > > > > > What can I use (nslookup, dig ? with what parameters) to see > whether the > > > > MX lines are right? When I send a test email from an off-site > machine, the > > > > sending sendmail log says "Connection timed out" and shows the down IP > > > address. > > > > > > > > Dick > > > > > > > > At 03:52 PM 10/1/2003 -0400, you wrote: > > > > > > > > >on the backup RH mail box: > > > > >add you domain to the backup /etc/mail/local-host-names and set it > > > > >to relay in /etc/mail/access > > > > > > > > > >type make in the /etc/mail/ directory and restart sendmail. > > > > > > > > > >you can try testing it. send mail to your domian. also, could telnet > > > > >to mailserver.com 25 and put SMTP comands to verify it is accepting > > > > >mail for that domain. > > > > > > > > > >when it is buffering the mail, it should show up in /var/spool/mail > > > > > > > > > >if your home DSL is going to be down for some time, you might just > > > > >want to bring the box into the office, and point the DNS directly at > > > > >it, if you can. > > > > > > > > > > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > > > > > > > My home DSL has been down for over 48 hours and it appears that it > > > will be > > > > > > down for several more days. (I spare you the gory details). I am > > > concerned > > > > > > about losing mail coming into various domains at that site. > > > > > > That RH 7.3 machine runs mail/web/primary DNS for those domains. > > > > > > > > > > > > I have modified the secondary DNS records for those domains (on a > > > machine > > > > > > at my office - also on DSL) with an higher cost MX record > pointing to a > > > > > > machine at the office also running RH 7.3 and sendmail, which I > assume > > > > > will > > > > > > pick up and queue the mail. The DNS TTLs are reasonably short, > > > fortunately. > > > > > > > > > > > > I've done this following O'Reilly/Sendmail book 2nd edition, but > > > its not > > > > > > always crystal clear if you don't already understand it! Is there > > > > > anything > > > > > > else I have to do on the backup machine (pointed to by the new MX > > > > > records), > > > > > > particularly is there anything I have to do to its sendmail config > > > files? > > > > > > > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > > > > > > > Dick > > > > > > _______________________________________________ > > Wlug mailing list > > Wlug(a)mail.wlug.org > > http://mail.wlug.org/mailman/listinfo/wlug > > > >-- > >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø >Karl Hiramoto <karl(a)hiramoto.org> >Work: 978-425-2090 ext 25 >Cell: 508-517-4819 >http://karl.hiramoto.org/ >AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto >¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø > >People are always available for work in the past tense. > > >_______________________________________________ >Wlug mailing list >Wlug(a)mail.wlug.org >http://mail.wlug.org/mailman/listinfo/wlug

Oct. 2, 2003

Re: mail disaster probablity

by Bob George

"Keith Wright" <kwright(a)free-comp-shop.com> wrote: > [...] > Wow! Where did you find mail hosting for $2/mo? I replied earlier that I'm using bmhost.com, which provides SMTP and web hosting. I noticed today that dyndns.org has made some changes (good and bad): Custom DNS WAS $30 one-time, but is now an annual charge. They now can do domain registration for $15/yr. for .com (I may transfer mine). More relevant to this thread, they now offer two mail-related services that might be of interest to those on this list running email servers, but who DON'T have a handy second server available for backup, or whose ISP blocks inbound TCP port 25. Quoting from their web page: --- cut here --- cut here --- MailHopSM Relay allows you to relay incoming mail to a mail server on a non-standard port. This is quite useful for those who want to run a mail server but are stuck with an ISP that blocks port 25, the standard mail port. [...] ($24.95/domain) MailHopSM Backup MX provides a secondary mail server to hold your e-mail for you should your main e-mail server go offline for any reason. Once you go back online, your mail will be delivered to you. Our MailHopSM server will attempt delivery more frequently than most mail servers, and will also hold onto your e-mail for twice as long. ($39.95/domain) --- cut here --- cut here --- Both are more expensive than my cheapie hosting outfit, but do allow you to run a "real" SMTP server if so desired. I'm not affiliated with either bmhost.com or dyndns.org, but am a satisfied customer of both. I just wanted to pass this info on to others experiencing the same challenges running home servers that I have. - Bob

Oct. 2, 2003

Re: [Wlug] mail disaster recovery

by Karl Hiramoto

you got 0 answer for your MX. your DNS is misconfigured. dig -t mx domain.com should in your case display at least 2 answers. your main server, and your backup server for example: dig -t mx wlug.org ; <<>> DiG 9.2.1 <<>> -t mx wlug.org ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63144 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 3, ADDITIONAL: 0 ;; QUESTION SECTION: ;wlug.org. IN MX ;; ANSWER SECTION: wlug.org. 259200 IN MX 20 mx.WPI.EDU. wlug.org. 259200 IN MX 10 smtp.WPI.EDU. ;; AUTHORITY SECTION: wlug.org. 259200 IN NS ns1.wlug.org. wlug.org. 259200 IN NS alum.WPI.EDU. wlug.org. 259200 IN NS dns1.dovetailinternet.net. ;; Query time: 110 msec ;; SERVER: 192.168.2.48#53(192.168.2.48) ;; WHEN: Thu Oct 2 14:02:48 2003 ;; MSG SIZE rcvd: 149 You might need to set your secondary DNS to be a master for your domain. remember to restart the named. On Thu, 2 Oct 2003, Richard Goodman wrote: > ; <<>> DiG 9.2.1 <<>> -t MX mydomain.net > ;; global options: printcmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3412 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;mydomain.net. IN MX > > ;; AUTHORITY SECTION: > mydomain.net. 2924 IN SOA mydomain.net. > rlg.bach.mydomain. > net. 2003100202 10800 3600 604800 3600 > > ;; Query time: 7 msec > ;; SERVER: 67.100.202.xxx#53(67.100.202.xxx) > ;; WHEN: Thu Oct 2 13:47:15 2003 > ;; MSG SIZE rcvd: 75 > > I'd already gotten that output but didn't see any MX output, just the question. > Your interpretation? Further suggestions? I'm losing mail at this point, > but would like to stop the hemorraging. The SOA serial# indicates it is the > most recent version of the modified (secondary) DNS > > Dick > > At 01:37 PM 10/2/2003 -0400, you wrote: > > >do a: > >dig -t MX domain.com > > > >should show you if the DNS is reporting the backup mail sever > >correctly. > > > > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > > > Karl, > > > That was exactly what I was looking for. > > > Did the local-host-names changes; I already had the RELAY lines in access > > > on the backup machine. > > > Since the primary DNS is on the down IP address, I modified the secondary > > > (slave) DNS which is one of my office boxes by adding a second MX line: > > > > > > my-host MX 99 temp.server.domain. <--dot at end > > > and restarted that named. > > > > > > > > > Its been quite a while and I'm not seeing any mail queueing, and I know > > > there's mail that should be coming in on a regular basis. What else > > might I > > > have missed? > > > > > > What can I use (nslookup, dig ? with what parameters) to see whether the > > > MX lines are right? When I send a test email from an off-site machine, the > > > sending sendmail log says "Connection timed out" and shows the down IP > > address. > > > > > > Dick > > > > > > At 03:52 PM 10/1/2003 -0400, you wrote: > > > > > > >on the backup RH mail box: > > > >add you domain to the backup /etc/mail/local-host-names and set it > > > >to relay in /etc/mail/access > > > > > > > >type make in the /etc/mail/ directory and restart sendmail. > > > > > > > >you can try testing it. send mail to your domian. also, could telnet > > > >to mailserver.com 25 and put SMTP comands to verify it is accepting > > > >mail for that domain. > > > > > > > >when it is buffering the mail, it should show up in /var/spool/mail > > > > > > > >if your home DSL is going to be down for some time, you might just > > > >want to bring the box into the office, and point the DNS directly at > > > >it, if you can. > > > > > > > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > > > > > My home DSL has been down for over 48 hours and it appears that it > > will be > > > > > down for several more days. (I spare you the gory details). I am > > concerned > > > > > about losing mail coming into various domains at that site. > > > > > That RH 7.3 machine runs mail/web/primary DNS for those domains. > > > > > > > > > > I have modified the secondary DNS records for those domains (on a > > machine > > > > > at my office - also on DSL) with an higher cost MX record pointing to a > > > > > machine at the office also running RH 7.3 and sendmail, which I assume > > > > will > > > > > pick up and queue the mail. The DNS TTLs are reasonably short, > > fortunately. > > > > > > > > > > I've done this following O'Reilly/Sendmail book 2nd edition, but > > its not > > > > > always crystal clear if you don't already understand it! Is there > > > > anything > > > > > else I have to do on the backup machine (pointed to by the new MX > > > > records), > > > > > particularly is there anything I have to do to its sendmail config > > files? > > > > > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > > > > > Dick > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø Karl Hiramoto <karl(a)hiramoto.org> Work: 978-425-2090 ext 25 Cell: 508-517-4819 http://karl.hiramoto.org/ AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø People are always available for work in the past tense.

Oct. 2, 2003

Re: [Wlug] mail disaster recovery

by Richard Goodman

; <<>> DiG 9.2.1 <<>> -t MX mydomain.net ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3412 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;mydomain.net. IN MX ;; AUTHORITY SECTION: mydomain.net. 2924 IN SOA mydomain.net. rlg.bach.mydomain. net. 2003100202 10800 3600 604800 3600 ;; Query time: 7 msec ;; SERVER: 67.100.202.xxx#53(67.100.202.xxx) ;; WHEN: Thu Oct 2 13:47:15 2003 ;; MSG SIZE rcvd: 75 I'd already gotten that output but didn't see any MX output, just the question. Your interpretation? Further suggestions? I'm losing mail at this point, but would like to stop the hemorraging. The SOA serial# indicates it is the most recent version of the modified (secondary) DNS Dick At 01:37 PM 10/2/2003 -0400, you wrote: >do a: >dig -t MX domain.com > >should show you if the DNS is reporting the backup mail sever >correctly. > > >On Thu, 2 Oct 2003, Richard Goodman wrote: > > > Karl, > > That was exactly what I was looking for. > > Did the local-host-names changes; I already had the RELAY lines in access > > on the backup machine. > > Since the primary DNS is on the down IP address, I modified the secondary > > (slave) DNS which is one of my office boxes by adding a second MX line: > > > > my-host MX 99 temp.server.domain. <--dot at end > > and restarted that named. > > > > > > Its been quite a while and I'm not seeing any mail queueing, and I know > > there's mail that should be coming in on a regular basis. What else > might I > > have missed? > > > > What can I use (nslookup, dig ? with what parameters) to see whether the > > MX lines are right? When I send a test email from an off-site machine, the > > sending sendmail log says "Connection timed out" and shows the down IP > address. > > > > Dick > > > > At 03:52 PM 10/1/2003 -0400, you wrote: > > > > >on the backup RH mail box: > > >add you domain to the backup /etc/mail/local-host-names and set it > > >to relay in /etc/mail/access > > > > > >type make in the /etc/mail/ directory and restart sendmail. > > > > > >you can try testing it. send mail to your domian. also, could telnet > > >to mailserver.com 25 and put SMTP comands to verify it is accepting > > >mail for that domain. > > > > > >when it is buffering the mail, it should show up in /var/spool/mail > > > > > >if your home DSL is going to be down for some time, you might just > > >want to bring the box into the office, and point the DNS directly at > > >it, if you can. > > > > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > > > My home DSL has been down for over 48 hours and it appears that it > will be > > > > down for several more days. (I spare you the gory details). I am > concerned > > > > about losing mail coming into various domains at that site. > > > > That RH 7.3 machine runs mail/web/primary DNS for those domains. > > > > > > > > I have modified the secondary DNS records for those domains (on a > machine > > > > at my office - also on DSL) with an higher cost MX record pointing to a > > > > machine at the office also running RH 7.3 and sendmail, which I assume > > > will > > > > pick up and queue the mail. The DNS TTLs are reasonably short, > fortunately. > > > > > > > > I've done this following O'Reilly/Sendmail book 2nd edition, but > its not > > > > always crystal clear if you don't already understand it! Is there > > > anything > > > > else I have to do on the backup machine (pointed to by the new MX > > > records), > > > > particularly is there anything I have to do to its sendmail config > files? > > > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > > > Dick

Oct. 2, 2003

Re: [Wlug] mail disaster recovery

by Karl Hiramoto

do a: dig -t MX domain.com should show you if the DNS is reporting the backup mail sever correctly. On Thu, 2 Oct 2003, Richard Goodman wrote: > Karl, > That was exactly what I was looking for. > Did the local-host-names changes; I already had the RELAY lines in access > on the backup machine. > Since the primary DNS is on the down IP address, I modified the secondary > (slave) DNS which is one of my office boxes by adding a second MX line: > > my-host MX 99 temp.server.domain. <--dot at end > and restarted that named. > > > Its been quite a while and I'm not seeing any mail queueing, and I know > there's mail that should be coming in on a regular basis. What else might I > have missed? > > What can I use (nslookup, dig ? with what parameters) to see whether the > MX lines are right? When I send a test email from an off-site machine, the > sending sendmail log says "Connection timed out" and shows the down IP address. > > Dick > > At 03:52 PM 10/1/2003 -0400, you wrote: > > >on the backup RH mail box: > >add you domain to the backup /etc/mail/local-host-names and set it > >to relay in /etc/mail/access > > > >type make in the /etc/mail/ directory and restart sendmail. > > > >you can try testing it. send mail to your domian. also, could telnet > >to mailserver.com 25 and put SMTP comands to verify it is accepting > >mail for that domain. > > > >when it is buffering the mail, it should show up in /var/spool/mail > > > >if your home DSL is going to be down for some time, you might just > >want to bring the box into the office, and point the DNS directly at > >it, if you can. > > > > > >On Wed, 1 Oct 2003, Richard Goodman wrote: > > > > > My home DSL has been down for over 48 hours and it appears that it will be > > > down for several more days. (I spare you the gory details). I am concerned > > > about losing mail coming into various domains at that site. > > > That RH 7.3 machine runs mail/web/primary DNS for those domains. > > > > > > I have modified the secondary DNS records for those domains (on a machine > > > at my office - also on DSL) with an higher cost MX record pointing to a > > > machine at the office also running RH 7.3 and sendmail, which I assume > > will > > > pick up and queue the mail. The DNS TTLs are reasonably short, fortunately. > > > > > > I've done this following O'Reilly/Sendmail book 2nd edition, but its not > > > always crystal clear if you don't already understand it! Is there > > anything > > > else I have to do on the backup machine (pointed to by the new MX > > records), > > > particularly is there anything I have to do to its sendmail config files? > > > > > > Any other pointers or "gotcha"s to this whole process? > > > > > > Dick > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø Karl Hiramoto <karl(a)hiramoto.org> Work: 978-425-2090 ext 25 Cell: 508-517-4819 http://karl.hiramoto.org/ AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø People are always available for work in the past tense.

Oct. 2, 2003