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REMINDER: Upcoming meeting Wed evening 7PM

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI Everybody, We have a WLUG meeting coming up on Wednesday, April 16th, at 7:00 PM. Directions to the meeting can be found on the WLUG website. There is a remote possibility that I will miss the meeting, which is why the meeting topic is listed as TBD on the website. If I cannot make it, I would recommend conducting the meeting as a Birds of a Feather session. However, if I am able to make it (95% probability), I'll bring my laptop, battery, DC-DC converter. We can have a discussion about reducing power consumption in laptops. I can do a quick demo of the PowerTOP application (see: http://www.lesswatts.org) I don't think this will take up the entire meeting, but we can use it as a starting point for further discussions. I also have the CPU frequency control applications installed to control the clock frequency. Naturally, we'll go out for food and refreshments afterwards. See ya later! Andy - -- Andy Stewart, Founder Worcester Linux Users' Group (http://www.wlug.org) Chelmsford Linux Meetup Group (http://linux.meetup.com/393) Amateur Radio: KB1OIQ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFIA/YFHl0iXDssISsRApQLAKCC/k2490DuXb7/pcw1o8l+AHEHbwCbBFZY bCjExEV9Lx7npyfVJxlk4Cw= =SNod -----END PGP SIGNATURE-----

April 15, 2008

Re: [Wlug] SPF

by Richard Klein

> -----Original Message----- > From: Doug Chamberlin > > Except that, as Keith has experienced, and as I have also > experienced, some systems recognize the sending IP address as > coming from a block of known dynamically assigned addresses > and reject the messages/connections even though all the > domain info has been set up correctly. I have used TZO's > services to work around this in the past. Highly recommended. Ah, right. I forgot about that. I haven't run into that problem because I have a static IP address. -- Rich

April 10, 2008

Re: [Wlug] SPF

by Keith Wright

> From: Richard Klein <richspk(a)gmail.com> > > Hmm... Have you ever called Speakeasy and asked them to set up reverse DNS > for you? I seem to recall that's something they have to do on their end. Yes. As I said, that was all done years ago. Though actually I never called them. It was done via email. You might think that answering email would be the basic entry level requirement, the sine qua non/nada/zilch, that any moron would learn to do before becoming an ISP. Sadly, most Idiot Service Providers seem to be totally unable to answer email from customers. They are only interested in phone calls from people who have no email. Speakeasy has someone who knows what is and who answers email at 2am Sunday faster than most of them can get an sales droid to pick up the phone during business hours. Anyway, I run a primary name server while they run a couple of secondaries and reverse DNS. I think I may have an officially "dynamic" IP address, but it was set up before DHCP. Speakeasy gave me an address when I signed up and since then neither of us have had any reason to touch it. -- Keith

April 8, 2008

Re: [Wlug] SPF

by Richard Klein

> -----Original Message----- > From: Keith Wright > > Yes, that's a good idea. That's why I did it about four years ago. > > It works well, maybe sending mail through Speakeasy is not > really necessary, but I seem to remember that I had a problem > with rejected mail when I sent it from my own machine. > > Maybe something else was wrong, but it's not too broken now, > so I don't fix it. > > -- Keith Hmm... Have you ever called Speakeasy and asked them to set up reverse DNS for you? I seem to recall that's something they have to do on their end. > PS: The answer to the original question was that I use > SPF for outgoing mail, but not incoming. It works, > but maybe anything else would work as well. > Maybe something else would work better. > > Outgoing SPF requires setting up a Domain Name Server. > Once that works it's easy. Example zone records were in > the original answer. > > Incoming SPF reqires setting up an SMTP server. > Even after the SMTP server is working, setting up SPF is > fairly complicated. Maybe there is a distribution that does > most of the setup for you. Thanks for the reminder. Unfortunately, I don't have an answer to the original question. -- Rich

April 7, 2008

Re: [Wlug] SPF

by Doug Chamberlin

Chaim The Squirrel Keeper wrote: > The relevance is just that you don't need those extra-cost services to > get a domain name. When you get a domain name, and set up your MX, > reverse DNS, and other records properly, other mail servers recognize > your mail server as being part of a legitimate domain instead of just > an anonymous user of an ISP's IP address pool. Except that, as Keith has experienced, and as I have also experienced, some systems recognize the sending IP address as coming from a block of known dynamically assigned addresses and reject the messages/connections even though all the domain info has been set up correctly. I have used TZO's services to work around this in the past. Highly recommended.

April 7, 2008

Re: [Wlug] SPF

by Keith Wright

> From: "Chaim The Squirrel Keeper" <richspk(a)gmail.com> > > On Sun, Apr 6, 2008 at 4:03 PM, Keith Wright <kwright(a)keithdiane.us> wrote: > > > From: "Chaim The Squirrel Keeper" <richspk(a)gmail.com> > > > > > > On Sun, Apr 6, 2008 at 1:46 AM, Keith Wright <kwright(a)keithdiane.us> wrote: > > > > > > mail gets rejected out of hand, just because it > > > comes from a dsl line. > > > > If that's the reason your mail gets rejected, it's pretty cheap to > > get yourself a domain name without hosting or co-lo. > > > > I send mail from a computer in my basement through a DSL > > line. There is no "hosting" or "co-lo" as I understand > > those terms, so I don't see the relevance of your comment. > > The relevance is just that you don't need those extra-cost services to > get a domain name. When you get a domain name, and set up your MX, > reverse DNS, and other records properly, other mail servers recognize > your mail server as being part of a legitimate domain instead of just > an anonymous user of an ISP's IP address pool. Yes, that's a good idea. That's why I did it about four years ago. It works well, maybe sending mail through Speakeasy is not really necessary, but I seem to remember that I had a problem with rejected mail when I sent it from my own machine. Maybe something else was wrong, but it's not too broken now, so I don't fix it. -- Keith PS: The answer to the original question was that I use SPF for outgoing mail, but not incoming. It works, but maybe anything else would work as well. Maybe something else would work better. Outgoing SPF requires setting up a Domain Name Server. Once that works it's easy. Example zone records were in the original answer. Incoming SPF reqires setting up an SMTP server. Even after the SMTP server is working, setting up SPF is fairly complicated. Maybe there is a distribution that does most of the setup for you.

April 6, 2008

Re: [Wlug] SPF

by Chaim The Squirrel Keeper

On Sun, Apr 6, 2008 at 4:03 PM, Keith Wright <kwright(a)keithdiane.us> wrote: > > From: "Chaim The Squirrel Keeper" <richspk(a)gmail.com> > > > > On Sun, Apr 6, 2008 at 1:46 AM, Keith Wright <kwright(a)keithdiane.us> wrote: > > > > > mail gets rejected out of hand, just because it > > > comes from a dsl line. > > > > If that's the reason your mail gets rejected, it's pretty cheap to > > get yourself a domain name without hosting or co-lo. > > I send mail from a computer in my basement through a DSL > line. There is no "hosting" or "co-lo" as I understand > those terms, so I don't see the relevance of your comment. The relevance is just that you don't need those extra-cost services to get a domain name. When you get a domain name, and set up your MX, reverse DNS, and other records properly, other mail servers recognize your mail server as being part of a legitimate domain instead of just an anonymous user of an ISP's IP address pool. -- Rich

April 6, 2008

Re: [Wlug] SPF

by Keith Wright

> From: "Chaim The Squirrel Keeper" <richspk(a)gmail.com> > > On Sun, Apr 6, 2008 at 1:46 AM, Keith Wright <kwright(a)keithdiane.us> wrote: > > > mail gets rejected out of hand, just because it > > comes from a dsl line. > > If that's the reason your mail gets rejected, it's pretty cheap to > get yourself a domain name without hosting or co-lo. I send mail from a computer in my basement through a DSL line. There is no "hosting" or "co-lo" as I understand those terms, so I don't see the relevance of your comment. -- Keith

April 6, 2008

Linux System Admin recommendations?

by Andrew Schiller

We are a small local company that is trying to do something different. We have chosen open source technologies in building our ideas. As the company has become more successful we need help supporting them. We are looking for a team of folks who are passionate about technology and know open source to provide thoughtful, reliable system administration services for our Redhat linux os systems. We have made some bad choices in the past, and as a result received service that has hurt us. We don't know where to look for guidance in choosing, and we are hoping the user group can recommend some good folks who will be there when we need them with depth of knowledge and abilities in performing routine maintenance as well as emergency support when we need it. Your recommendations would truly mean a lot to us. Mercader

April 6, 2008

Re: [Wlug] DNS settings

by Brian J. Conway

On Sun, 6 Apr 2008 14:44:38 +0530 Deepan <codeshepherd(a)gmail.com> wrote: > Hi All, > I would like to configure my laptop to use > 4.2.2.2/4.2.2.3 as DNS. The problems is everytime > my machines requests for a dynamic IP via DHCP, my > DNS settings get reset. Is it possible to override > this? I am running Fedora 8. > Regards > Deepan > Sudoku Solver: http://www.sudoku-solver.net/ It will depend on the DHCP client you use, of course, but all my OSes have standardized on ISC's dhclient. In that case, it's a matter of editing /etc/dhclient.conf (or /etc/dhcp3/dhclient.conf) and making use of the following or similar lines: supersede domain-name "example.com"; prepend domain-name-servers 127.0.0.1; I think you can use supersede, prepend, and append for any of the above, but the documentation can tell you for sure. Brian J. Conway

April 6, 2008

Re: [Wlug] Forwarding mail servers, was: SPF

by Dick Goodman

I've had a Speakeasy DSL for -- I think -- about 6 years. I've got two mail servers, serving more than half a dozen domains. I don't forward through Speakeasy and I've never had a problem with rejected mail. Of course my Speakeasy DSL has multiple static IPs, which might make a difference. Keith, I wish I only got 100 spam/day .. across all my accounts its closer to a million/year incoming Dick >On Sun, Apr 6, 2008 at 1:46 AM, Keith Wright <kwright(a)keithdiane.us> wrote: >> I don't use Speakeasy web mail, >> but if I don't forward through Speakeasy, too much >> mail gets rejected out of hand, just because it >> comes from a dsl line. (I think. (It's been >> a while since I tried it, and you never know >> exactly why you have been rejected.)) > >If that's the reason your mail gets rejected, it's pretty cheap to get >yourself a domain name without hosting or co-lo. > >-- >Rich

April 6, 2008

Re: [Wlug] SPF

by Chaim The Squirrel Keeper

On Sun, Apr 6, 2008 at 1:46 AM, Keith Wright <kwright(a)keithdiane.us> wrote: > I don't use Speakeasy web mail, > but if I don't forward through Speakeasy, too much > mail gets rejected out of hand, just because it > comes from a dsl line. (I think. (It's been > a while since I tried it, and you never know > exactly why you have been rejected.)) If that's the reason your mail gets rejected, it's pretty cheap to get yourself a domain name without hosting or co-lo. -- Rich

April 6, 2008

DNS settings

by Deepan

Hi All, I would like to configure my laptop to use 4.2.2.2/4.2.2.3 as DNS. The problems is everytime my machines requests for a dynamic IP via DHCP, my DNS settings get reset. Is it possible to override this? I am running Fedora 8. Regards Deepan Sudoku Solver: http://www.sudoku-solver.net/

April 6, 2008

Re: [Wlug] SPF

by Keith Wright

> From: Jamie Guinan <guinan(a)bluebutton.com> > > Are any of you admins out there running SPF, or something similar? This question is too hard for me. What is "running SPF"? I have these top secret records in my DNS zone file. keithdiane.us. IN MX 10 dsl.keithdiane.us. keithdiane.us. IN TXT "v=spf1 mx include:speakeasy.net ~all" (Don't tell anybody.) And I send all my mail through speakeasy, by which I mean that the SMTP server at keithdiane.us forwards through there as a "smart host". I don't use Speakeasy web mail, but if I don't forward through Speakeasy, too much mail gets rejected out of hand, just because it comes from a dsl line. (I think. (It's been a while since I tried it, and you never know exactly why you have been rejected.)) On the other hand, when a host sends mail _to_ my server, it does not check its DNS for SPF at all. > How well does it work for you? Compared to what? I'm not sure how it works, because I've really never done it any other way. I do know that spam is way out of hand. I get over 100 a day of total stupid stink'n spam. (This does not count mailing lists that I am subscribed to that I do not actualy read; just really stupid crap in Russian, repetitious attempts to sell stuff I had better not mention for fear of falling into the WPI filter, usw) It's almost to the point where I might do something . . . soon. Real . Soon . . . Now . . -- Keith .

April 6, 2008

Re: [Wlug] SPF

by Dick Goodman

I run 4 Linux mailservers and do all my own DNS for multiple domains Yesterday (I think) one account on one domain got about 500 emails similar to what you described in a period of about 30 minutes. I have SPF records on many of my domains (because it was so simple to set up), and promptly added it to the DNS of the domain of the affected account. Today the number of such emails was down at least 10x, but I can't say for sure it was the SPF that did it. Dick >Hi, > >Are any of you admins out there running SPF, or something similar? > > http://www.openspf.org/ > >How well does it work for you? > >Today I started getting a large number of "undeliverable" responses >due to spammers forging my email address in the From: address. > >Wondering if SPF is worth the trouble to set up. > >I'm using postfix, btw. > >Thanks, >-Jamie

April 2, 2008

Re: [Wlug] SPF

by Chuck Anderson

On Tue, Apr 01, 2008 at 11:48:35AM -0400, Jamie Guinan wrote: > Are any of you admins out there running SPF, or something similar? > > http://www.openspf.org/ > > How well does it work for you? DKIM is the "new SPF" standardized effort backed by Yahoo!, Cisco, Sendmail, Inc. and others. It combines Yahoo!'s DomainKeys and another one whose name I forget now. If I were to set something up, I'd probably use DKIM, but I have no experience with it myself.

April 1, 2008

SPF

by Jamie Guinan

Hi, Are any of you admins out there running SPF, or something similar? http://www.openspf.org/ How well does it work for you? Today I started getting a large number of "undeliverable" responses due to spammers forging my email address in the From: address. Wondering if SPF is worth the trouble to set up. I'm using postfix, btw. Thanks, -Jamie

April 1, 2008

Sr. Linux Admin Opportunity at Staples

by Carey, Joseph

Good Morning, I wanted to make the members aware of a current role I am looking to fill for my IS department. This is an immediate need, interviews starting ASAP. Senior Level Linux Admin that has 5+ years of systems admin experience and 3+ with Red Hat and/or SuSE. This is a permanent position that offers competitive salary, bonus, stock, benefits, and more... Best Regards, Joe Carey Corporate Recruiter STAPLES HOME OFFICE View our jobs @ www.staples.com/jobs

April 1, 2008

Re: [Wlug] Missing /dev files

by Stephen Daukas

On 4/1/08, Aaron Haviland <orion(a)parsed.net> wrote: [...] > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? I'd go with "super massive darktrons!" ;-) Steve

April 1, 2008

Re: [Wlug] Missing /dev files

by Aaron Haviland

vze284qe(a)verizon.net wrote, on Mar 31, 2008 at 19:27 EDT: > So I shut down the computer - power off, unplug, remove battery (it's a > laptop) and waited a minute. I reinstalled the battery, plugged it in > and booted up the usual kernel, et voila...the /dev/sdb* files > reappeared!! All looks good! Even Linux has some strangeness I guess. > > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? I've got a flash card reader that, if it's got a card in it when the computer is turned on, will forever fail to recognise that it's got media. However, if I insert the media after Linux has recognised and reset the device, all is good. Perhaps you had a situation like that? I blame BIOS weirdness, really. -- Aaron Haviland 34 Wayne Ave, Dudley, MA

April 1, 2008

Re: [Wlug] Missing /dev files

by Jamie Guinan

On Mon, 31 Mar 2008, vze284qe(a)verizon.net wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > On Sunday 30 March 2008, Chuck Noyes wrote: > > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > > was coping several mega-bytes of files to it when I got some I/O > > > errors. Then I noticed that all of my /dev/sdb* files were missing > > > from /dev. > > > > > > When I do an ls -al /dev, all the files are there except the sdb > > > files. > > > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > > 2.6.20-16-generic. > > > > the device nodes only exist as the kernel thinks the device exists. > > if you got I/O errors and then the device nodes disappeared, the > > kernel probably detached the device. so even if you made the device > > nodes by hand, it wouldnt matter as the kernel still wouldnt think > > the device was attached. review your `dmesg` and if need be, > > unplug/plug in the USB device. -mike > > Well....this is really strange! > > I booted up another kernel a 2.6.18, and I noticed that the /dev/sdb* > files were still missing! All of the other /dev files were there. > > So I shut down the computer - power off, unplug, remove battery (it's a > laptop) and waited a minute. I reinstalled the battery, plugged it in > and booted up the usual kernel, et voila...the /dev/sdb* files > reappeared!! All looks good! Even Linux has some strangeness I guess. > > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? A few thoughts... Is the external USB drive self-powered? Did you power-cycle it at any point? The device itself might have gotten wedged. It might have shown up as /dev/sda* on some of those interim reboots, depending on whether there were any other usb storage devices present. "lsusb", and the tail command Eric suggested, are your friends. What is sda currently? [ these work on 2.6.23, not sure about earlier kernels ] $ cat /sys/block/sda/device/model $ cat /sys/block/sdb/device/model Anyway, glad to hear it at least works again. -Jamie

March 31, 2008

Re: [Wlug] Missing /dev files

by vze284qe＠verizon.net

On Sun, 30 Mar 2008 21:25:28 -0400 Mike Frysinger <vapier(a)gentoo.org> wrote: > On Sunday 30 March 2008, Chuck Noyes wrote: > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > was coping several mega-bytes of files to it when I got some I/O > > errors. Then I noticed that all of my /dev/sdb* files were missing > > from /dev. > > > > When I do an ls -al /dev, all the files are there except the sdb > > files. > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > 2.6.20-16-generic. > > the device nodes only exist as the kernel thinks the device exists. > if you got I/O errors and then the device nodes disappeared, the > kernel probably detached the device. so even if you made the device > nodes by hand, it wouldnt matter as the kernel still wouldnt think > the device was attached. review your `dmesg` and if need be, > unplug/plug in the USB device. -mike Well....this is really strange! I booted up another kernel a 2.6.18, and I noticed that the /dev/sdb* files were still missing! All of the other /dev files were there. So I shut down the computer - power off, unplug, remove battery (it's a laptop) and waited a minute. I reinstalled the battery, plugged it in and booted up the usual kernel, et voila...the /dev/sdb* files reappeared!! All looks good! Even Linux has some strangeness I guess. I don't know what caused this in the first place...transient lightning bolts? spurrious darktrons? Anyway, it's working. Thanks to all who offered help. -Chuck -- -Chuck

March 31, 2008

Re: [Wlug] Missing /dev files

by Tim Keller

Is this device at the end of a USB hub??? I ask because I run into this issue when I plug my PSP into a usb hub connexted to my FC8 box. If I plug directly in I don't see this issue... Just an idea... Thanks, Tim. On 3/30/08, Chuck Noyes <vze284qe(a)verizon.net> wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > On Sunday 30 March 2008, Chuck Noyes wrote: > > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > > was coping several mega-bytes of files to it when I got some I/O > > > errors. Then I noticed that all of my /dev/sdb* files were missing > > > from /dev. > > > > > > When I do an ls -al /dev, all the files are there except the sdb > > > files. > > > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > > 2.6.20-16-generic. > > > > the device nodes only exist as the kernel thinks the device exists. > > if you got I/O errors and then the device nodes disappeared, the > > kernel probably detached the device. so even if you made the device > > nodes by hand, it wouldnt matter as the kernel still wouldnt think > > the device was attached. review your `dmesg` and if need be, > > unplug/plug in the USB device. -mike > > dmesg shows many entries like this: > > new high speed USB device using ehci_hcd and address 10 > usb 5-3: device descriptor read/8, error -110 > usb 5-3: device descriptor read/8, error -110 > > Googling this message doesn't seem to provide much help. > > I have unpluged the device and even rebooted the computer. However, > after a reboot, the /dev/sdb* files are still missing. > > -- > -Chuck > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- I am leary of the allegiances of any politician who refers to their constituents as "consumers".

March 31, 2008

Re: [Wlug] Missing /dev files

by Eric Martin

On Mon, Mar 31, 2008 at 12:40 AM, Karl Hiramoto <karl(a)hiramoto.org> wrote: > Chuck Noyes wrote: > > On Sun, 30 Mar 2008 21:25:28 -0400 > > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > > > > dmesg shows many entries like this: > > > > new high speed USB device using ehci_hcd and address 10 > > usb 5-3: device descriptor read/8, error -110 > > usb 5-3: device descriptor read/8, error -110 > > > > Googling this message doesn't seem to provide much help. > > > > I have unpluged the device and even rebooted the computer. However, > > after a reboot, the /dev/sdb* files are still missing. > > > > > The device files should be created by udev automatically when you > pluging the device, or boot the PC.. When you un/plug the device you > should see some info in dmesg. Perhaps you have some kind of error > occurring. you could try rmmod "ehci_hcd" to try using USB 1.1 instead > of usb 2.0. You could also try plugging it into a different hub or usb > port on the PC. > I'd run a tail -f on /var/log/messages (or wherever your kernel messages go) so you can see what's happening as you plug / unplug the device. In Gentoo, the default for syslog-ng is to have it default log to tty12 so you can just flip over there. -- HTH Eric

March 31, 2008

Re: [Wlug] Missing /dev files

by Karl Hiramoto

Chuck Noyes wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > >> On Sunday 30 March 2008, Chuck Noyes wrote: >> >>> I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and >>> was coping several mega-bytes of files to it when I got some I/O >>> errors. Then I noticed that all of my /dev/sdb* files were missing >>> from /dev. >>> >>> When I do an ls -al /dev, all the files are there except the sdb >>> files. >>> >>> How can I get these back? I'm running Ubuntu 'gutsy' >>> 2.6.20-16-generic. >>> >> the device nodes only exist as the kernel thinks the device exists. >> if you got I/O errors and then the device nodes disappeared, the >> kernel probably detached the device. so even if you made the device >> nodes by hand, it wouldnt matter as the kernel still wouldnt think >> the device was attached. review your `dmesg` and if need be, >> unplug/plug in the USB device. -mike >> > > dmesg shows many entries like this: > > new high speed USB device using ehci_hcd and address 10 > usb 5-3: device descriptor read/8, error -110 > usb 5-3: device descriptor read/8, error -110 > > Googling this message doesn't seem to provide much help. > > I have unpluged the device and even rebooted the computer. However, > after a reboot, the /dev/sdb* files are still missing. > > The device files should be created by udev automatically when you pluging the device, or boot the PC.. When you un/plug the device you should see some info in dmesg. Perhaps you have some kind of error occurring. you could try rmmod "ehci_hcd" to try using USB 1.1 instead of usb 2.0. You could also try plugging it into a different hub or usb port on the PC. -- -- Karl Hiramoto http://karl.hiramoto.org/

March 31, 2008