Date: Thu, 9 Mar 2000 22:03:13 -0800 (PST) From: Tom <tom@sdf.com> To: lambert@cswnet.com Cc: freebsd-isp@freebsd.org Subject: Re: Am I being spammed? Or is egroups this impolite? Message-ID: <Pine.BSF.4.05.10003092158320.4553-100000@misery.sdf.com> In-Reply-To: <200003081711.LAA37753@troi.csw.net>
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On Wed, 8 Mar 2000 lambert@cswnet.com wrote: > > EGroups sends e-mail to a mailing list sorted by domain. They use > >Qmail, so they send to one recipient per connection. So if you have a > >100 people at your domain get EGroups e-mail, in a short period of time, > >EGroups will open a 100 connections to your mail server(s). Hopefully you > >can handle it. This results in a EGroups cutting a swath through the > >internet every time they do a mailing. > > I had 35 open connections from egroups to my primary MX for over 30 > minutes. My secondary MX had over 30 connections from egroups at the > same time. Is this a case of a clueless admin at egroups? Or are > they just assuming that everyone else has 3 C-Classes of MX hosts > also? I only have 20K mailboxes. If they have connect failures, they would have tried the secondary. > > You should probably set your maximum connection limit to something that > >your servers can handle. Switching from Sendmail to Postfix should help. > > I was running out of file handles : > > /tmp/RxB37043: Too many open files in system You should have set your maximum process limit to something your system can handle: MaxDaemonChildren. Take an opportunity to check all other servers and set appropiate limits. > So I guess I'll have to rebuild the kernel. I'll take this as an > oportunity to upgrade from Jun 30 3.2-STABLE. Not necessary on any 3.x system. "sysctl -w kern.maxfiles=X", where is X is bigger than it is now. Probably something 4 times the maximum process limit of sendmail would be good. > I'm still a newbie BSD admin. I've only been immersed in *nix for the > last 18 months (working my way through a backlog of stuff, 2.1.6, that > should have been done a long time ago). I'm still not confident > enough of my ability to convert a production box to Postfix without > making a lot of customers mad. Fortunately, this is my next priority > item. > > -- > Scott Lambert > lambert@cswnet.com > Systems and Security Administrator > CSW Net, Inc. > ================================================================ > Written: Wednesday, March 08, 2000 - 09:45 AM > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isp" in the body of the message > > Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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