RE: smtp and pop3 timeouts - more info

[Roger Waterhouse <RogerW@xxxxxxxxxx>]

Hi;

While continuing to beat my head against this problem, I noticed that if I
do a netstat I have hundreds if not thousands of pop3 sockets in a state of
TIME_WAIT. What would cause this?

> -----Original Message-----
> From: Roger Waterhouse [mailto:RogerW@pccorp.com]
> Sent: Monday, April 01, 2002 11:10 AM
> To: 'qmail@list.cr.yp.to'
> Subject: smtp and pop3 timeouts
> 
> Hello;
> 
> I have a situation where Windows 9x clients are having difficulty
> accessing
> a local qmail server with Outlook Express (I know, I know, but bear with
> me). The program simply times out. The server is running Linux RedHat 6.2
> with qmail set up as per Dave Sill's "The qmail Handbook". When
> troubleshooting I have ascertained the following:
> 
> pinging the server works just fine
> telnet to the server (port 23)no problem
> ssh to server no problem
> telnet to server port 110 - FAILS more than not, simply times out. telnet
> to
> server port 25 - FAILS about 50% of the time, also times out. no
> information
> in the log files on any failed connections If rather than telneting on
> port
> 110 to the local ip address of the server, I telnet to it's FQDN port 110
> (which is port forwarded to through a router) no problem. In other words I
> go out to the isp and back into the network.
> 
> I have done the following:
> Checked ALL ip addressing, net masks, broadcast addresses etc to death.
> Removed the tcp rules from the qmail-pop3d run file. No difference.
> Checked
> server load, free mem, free disk. No problems. Server is an Acer server
> class Pentium III system, lightly loaded. Replaced hub with a 10/100
> switch,
> No difference.
> 
> The problem is not consistent and is worse first thing in the morning,
> getting better as the day moves on.
> 
> Any suggestions or requests for more info would be most welcome as I
> cannot
> afford to lose any more hair<grin>.
> 
> The exact command used to invoke the pop3 server is:
> 
> exec /usr/local/bin/softlimit -m 2000000 /usr/local/bin/tcpserver -v -R -H
> -l 0 -c "$MAXPOP3D" 0 110 /var/qmail/bin/qmail-popup mail.westernpump.ca
> /bin/checkpassword /var/qmail/bin/qmail-pop3d Maildir 2>&1 note that
> MAXPOP3D = 40
> 
> Cheers
> Roger