I was able to get 45/50 connections using telnet, so I don't think this is the problem. I tried to put the -l option into the pop3d run script, all users starting getting error messages and could not connect to the server. I am running Redhat7 with qmail and vmailmgr. This only happens every so often, the network slows to a crawl and everybody has problems connecting to the mail server receiving time-out errors. Even the internal network slows down. Any help would be appreciated. Vivian > -----Original Message----- > From: MarkD [mailto:[EMAIL PROTECTED]] > Sent: Thursday, 26 July 2001 3:26 pm > To: [EMAIL PROTECTED] > Subject: Re: pop3d > > > On Thu, Jul 26, 2001 at 02:39:18PM +1000, Vivian Doherty allegedly wrote: > > We have a problem with the qmail-pop3d, when the status is 7/50 we start > > having network problems, users cannot connect and receive > timeout errors, it > > only happens about once a month. Any help would be appreciated. > > > > Can anyone tell me what is going on and how I fix the problem, why would > > there be 7 undelivered for pop3d mail accounts? > > You're getting confused. tcpserver has nothing to do with delivered or > undelivered mails. What this log entry is saying is that 7 out of a > maximum of 50 concurrent pop sessions are active. You no doubt have a > "-c 50" in your tcpserver script for pop. > > You can conduct a simple experiment to help find out what's going > on. Establish lots of pop sessions using telnet, eg: > > telnet popserver.host.name 110 > > Wait until you get the banner then background the telnet with ^Z. > > Keep doing this and watch the pop logs. Can you get more than 7/50 or > do the telnets start to fail? If they start to fail before you have 50 > of them, show us the error you get back from telnet. > > Oh, and at the end of the test, don't forget to kill all those telnets. > > My suspicion is that tcpserver is started with a kernel imposed limit > on the number of children it can fork concurrently and that that limit > is much less than 50 that you want it to use. > > > Regards. > > > > > > > > Part of the maillog below. > > Jul 25 13:26:45 mail pop3d: 996031605.921791 tcpserver: status: 7/50 > > Jul 25 13:26:45 mail pop3d: 996031605.922774 tcpserver: pid 6106 from > > 202.7.178.138 > > Jul 25 13:27:09 mail smtpd: 996031629.717653 tcpserver: end > 26591 status 0 > > Jul 25 13:27:09 mail smtpd: 996031629.717786 tcpserver: status: 0/50 > > Jul 25 13:27:19 mail pop3d: 996031639.938243 tcpserver: ok 1923 > > :192.168.0.111:110 :192.168.0.19::1035 > > Jul 25 13:27:19 mail pop3d: 996031639.962696 tcpserver: end > 1923 status 256 > > Jul 25 13:27:19 mail pop3d: 996031639.962939 tcpserver: status: 6/50 > > Jul 25 13:27:24 mail pop3d: 996031644.263336 tcpserver: status: 7/50 > > Jul 25 13:27:24 mail pop3d: 996031644.264508 tcpserver: pid 7991 from > > 192.168.0.33 > > Jul 25 13:27:33 mail pop3d: 996031653.305314 tcpserver: ok 2611 > > :192.168.0.111:110 :192.168.0.7::1053 > > Jul 25 13:27:33 mail pop3d: 996031653.305460 tcpserver: end > 2611 status 256 > > Jul 25 13:27:33 mail pop3d: 996031653.305520 tcpserver: status: 6/50 > > Jul 25 13:27:38 mail pop3d: 996031658.739339 tcpserver: status: 7/50 > > Jul 25 13:27:38 mail pop3d: 996031658.740334 tcpserver: pid 8681 from > > 202.7.178.138 > > > > Regards > > > > > > Vivian Doherty > > IT Consultant > > James Walker Australia Pty Ltd > > 32 Clapham Rd > > Regents Park NSW 2143 > > Ph: 9644 9755 > > Mailto:[EMAIL PROTECTED] > > > > >
