Slightly OT: Exim time-outs

[Steve Freegard]

Colocation Colocation wrote:
> I am getting a huge number of EXIM time outs on outbound mail :
> 
> Now normally I would blame someone else but this time it looks to be my 
> mail server. For one persistent offender I telnet'ed into their SMTP 
> server and sent the mail manually and that went through fine but somehow 
> EXIM is getting hung up when trying to send itself. Any ideas?
> 
> 2007-11-23 07:01:24 1IuQiH-00056g-HD SMTP timeout while connected to 
> mail-in.freeserve.com <http://mail-in.freeserve.com> [193.252.22.141 
> <http://193.252.22.141>] after initial connection: Connection timed out
> 2007-11-23 07:06:29 1IvSXY-0007zs-7v SMTP timeout while connected to 
> ALT1.ASPMX.L.GOOGLE.COM <http://ALT1.ASPMX.L.GOOGLE.COM> [209.85.199.114 
> <http://209.85.199.114>] after initial connection: Connection timed out

Check that you aren't affected by this:  http://www.znep.com/~marcs/mtu/ 
the symptoms of this will only be evident when a packet > PMTU is sent, 
so your manual testing via telnet may not have sent enough data for this 
to become apparent.

If that doesn't help, check your Exim timeouts and make sure they are 
RFC compliant.

Kind regards,
Steve.

--
Steve Freegard
Fort Systems Ltd.
Tel: +1 202 595 7760 x860