April 2006 - WLUG - wlug.mailman3.com

Webcast meetings?

by Tim Keller

Hey Everybody, I've got a pie in the sky question. My parental duties now proclude me from attending the Wednesday night WLUG meetings. Since we hold the meetings in the "Media room" is there any chance we could make them available live and/or a podcast? Thanks, Tim. -- I am leary of the allegiances of any politician who refers to their constituents as "consumers".

April 27, 2006

Re: [Wlug] Mail servers, Comcast, and spam

by Robert L Krawitz

Date: Tue, 25 Apr 2006 17:43:53 -0400 From: Andy Stewart <andystewart(a)comcast.net> Comcast appears unwilling to whitelist the Town email domain since this is quite easily spoofed by spam generators. The Town is considering using port forwarding on their firewall to reach the mail server. The Town is unwilling to put the mail server on or outside of the firewall, claiming that the risk level is too high for them to support. Can't you just use an MX record with a high priority number (or whatever it's called, I've long since forgotten) and have your firewall eat packets targeted to it? -- Robert Krawitz <rlk(a)alum.mit.edu> Tall Clubs International -- http://www.tall.org/ or 1-888-IM-TALL-2 Member of the League for Programming Freedom -- mail lpf(a)uunet.uu.net Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton

April 26, 2006

[Fwd: Job opportunity]

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 If you have interest in this job opportunity, please contact the recruiter directly. ================================================================ - -------- Original Message -------- Subject: Job opportunity Date: 26 Apr 2006 14:35:08 -0400 From: Jennifer Hillner <jhillner(a)hollisterinc.com> To: andystewart(a)comcast.net Hi Andy, I came across your user group online and I was hoping to network with you. I have a job opportunity for a Java Swing developer who is also big into Linux and opensource technologies. It is for a great pharmaceutical company in Cambridge. If you know of anyone who would be interested in hearing about this or other opportunities, please feel free to pass this along as we have an excellent referral program. I look forward to hearing from you. Thanks, Jenn *Software Developer within Scientific Web Application group* Required 1-3 years Java Swing development, new grads will be considered Linux experience Experience with any open source technologies Desired: MySQL or Oracle DB experience This is an excellent opportunity to join a leading pharmaceutical company. This developer will be responsible for java swing development of one of their main scientific web applications. This person will be under the mentorship of a senior level developer so this is a great learning opportunity. 75% of this position is development and the other 25% is general Linux administration and general database and programming problem solving. Sincerely, Jennifer Hillner Senior Recruiter/Technology Hollister Associates, Inc. 75 State Street, 9th Floor Boston, MA 02109 jhillner(a)hollisterstaff.com <mailto:jhillner@hollisterstaff.com> (T) 617.654.0257 (F) 617.695-3807 Visit us at www.HollisterStaff.com <http://www.hollisterstaff.com/> The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient, please notify us immediately by returning the e-mail to the originator. Confidential, unpublished property of Hollister Associates, Inc. Do not duplicate or distribute Use and distribution limited solely to authorized personnel. (© Copyright 2005 (Hollister Associates, Inc.) - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFET+8UHl0iXDssISsRAoL2AJ92oDSNCHDYCtrFeAd6gEmkfIrA/QCfXXny 8b9dOemO3xFRn2q1W6/WGK0= =rYiQ -----END PGP SIGNATURE-----

April 26, 2006

Bandwidth sharing problem

by Gregory Avedissian

I have a friend with a bandwidth sharing problem. There are two linux boxes (one Debian Sarge, one SuSE 9.3) attached to an old Linksys 10/100 wired router on cable internet (3Mbps confirmed download speed). When the Debian box is downloading a large file, it hogs all the bandwidth, and the SuSE box is very slow on the internet. Is there an easy way to limit download speed on one or both boxes to make them share nicely? I looked through the manual for the router, and I don't see a way to do it there. If there's not an easy way to do it, I'd still like to hear the difficult way to do it. Thanks, Greg

April 26, 2006

Re: [Wlug] meeting next week?

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Eric Stein wrote: > Unfortunately I'll have gone home by the 10th. Oh well, you guys will > still be here next year, right? > > Eric HI Eric, We meet every month, even in the summer. We'll keep meeting until nobody shows up any more. :-) Sure, we'll be around next year (I presume you mean September). See ya later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFETvSZHl0iXDssISsRAuU/AJ9j/iysKMUSRkXhRPUSdPLIXIJ/1ACdGjtD mS0RYQZhbrzvQnZLf3ddgm8= =CLMD -----END PGP SIGNATURE-----

April 26, 2006

Re: [Wlug] meeting next week?

by Eric Stein

Unfortunately I'll have gone home by the 10th. Oh well, you guys will still be here next year, right? Eric Andy Stewart wrote: > Hi Eric et al, > > The website says May 10th (but I haven't yet updated the home page). > > There is currently no scheduled topic for the May meeting. > > We do have a topic for the June meeting (a rep from Sybase will give the > talk). I have lots of goodies from Sybase to give away at that meeting > (thanks Sybase!). > > I'll try to get the website updated within the next day. > > Andy > > -- > Andy Stewart, Founder > Worcester Linux Users' Group > Worcester, MA, USA > http://www.wlug.org -- Eric Stein WPI CS 2009 Treasurer, Student Pugwash

April 25, 2006

Re: [Wlug] Mail servers, Comcast, and spam

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI all, Comcast appears unwilling to whitelist the Town email domain since this is quite easily spoofed by spam generators. The Town is considering using port forwarding on their firewall to reach the mail server. The Town is unwilling to put the mail server on or outside of the firewall, claiming that the risk level is too high for them to support. Later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFETpgZHl0iXDssISsRArvsAJ95z2vFXZiZVK7eu/A/zBwxgBVWIQCfebM/ gDQBjl+MCVf9/PE68lIpEmE= =Sfj+ -----END PGP SIGNATURE-----

April 25, 2006

Re: [Wlug] meeting next week?

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Eric Stein wrote: > Hi all, > > I'm only writing to ask whether or not there will be a meeting held on > the 3rd and if we have a topic. Thanks. > Hi Eric et al, The website says May 10th (but I haven't yet updated the home page). There is currently no scheduled topic for the May meeting. We do have a topic for the June meeting (a rep from Sybase will give the talk). I have lots of goodies from Sybase to give away at that meeting (thanks Sybase!). I'll try to get the website updated within the next day. Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFETpMPHl0iXDssISsRAiwvAJ9orMhoVudi2hzxubaUkdYLcWYWlQCfZvvC Y60GVTZjcDaF9dDJFefrThs= =aG8C -----END PGP SIGNATURE-----

April 25, 2006

Re: [Wlug] Mail servers, Comcast, and spam

by Bill Mills-Curran

On Tue, Apr 25, 2006 at 11:58:13AM -0400, Theo Van Dinter wrote: > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > Date: Tue, 25 Apr 2006 12:03:30 -0400 > Subject: > Content-Description: ATT10815498.txt > On Tue, Apr 25, 2006 at 09:36:20AM -0400, Chuck Anderson wrote: > > I'll add that WPI uses separate servers for receiving and sending SMTP > > connections. The sending servers are not in any DNS MX records, so > > any site using "spam blocking" tactics that require the sending SMTP > > server to be listed as an MX would block WPI email. > > Most mid-to-large organizations will do this as well. It would be > complete stupidity for a receiver to not accept mail from a server whose > domain MX record doesn't include that server -- they'd be blocking a vast > majority of domains. What's more plausible is that the receiver is blocking > mails from domains lacking an MX record, but even that's going to cause false > positives (FPs) on a large amount of domains. > > The usual thing that happens is that receivers block mails where the host > part of the email address (to the right of the @) has no A or MX record > at all. Since to the receiver it looks like that host doesn't exist, > why accept mail from it? > > ie: > > HELO nonexistant.example.com > > where, typically, nonexistant is a host behind a firewall, but isn't in the > external DNS zone. Usually all hosts behind a firewall send to a relay > gateway which masquerades the headers and envelope so that the receiving > server sees an externally available name. ie: > > nonexistant.example.com (helo nonexistant ...) -> > relay.example.com (helo example.com) -> > your-server > > so when your-server gets the mail, it looks up "example.com" and finds A/MX > records, so accepts the mail. > > -- > Randomly Generated Tagline: > "Many people equate the word 'daemon' with the word 'demon,' implying some > kind of Satanic connection between UNIX and the underworld." - Evi Nemeth I'm wondering whether it might actually be a reverse lookup issue. I recently had to opt into a static IP at my web & mail services provider so that reverse lookups would work. AOL has started blocking email from senders that don't have a valid PTR record. If the mail server is behind a firewall, this _could_ be the issue. I use a mail server at home behind a firewall, but I don't send directly to the recipient -- I use the "smart host" feature of sendmail. The "masquerade_as" feature might be what they need. The trick is to make the smtp server look as though it's using the "external" hostname and IP address. I'm just guessing, though. :-) Bill

April 25, 2006

meeting next week?

by Eric Stein

Hi all, I'm only writing to ask whether or not there will be a meeting held on the 3rd and if we have a topic. Thanks. -- Eric Stein WPI CS 2009 Treasurer, Student Pugwash

April 25, 2006