Am 29.10.2013 21:46, schrieb Roman Gelfand: > How did you decide this is a network issue?
Connection timed out? > How would you go about determining which router which switch? it's hard to explain how to debug network issues > On Tue, Oct 29, 2013 at 4:33 PM, li...@rhsoft.net <li...@rhsoft.net> wrote: >> >> >> Am 29.10.2013 21:25, schrieb Roman Gelfand: >>> The client is thunderbird. Correct me if I am wrong, it appears it 40 >>> seconds for the client to hand over the email to the server? If so, >>> where should I troubleshoot? are there maintenance >>> tasks/configuration changes to improve this situation. >>> >>> BTW... from the inception there was no or negligible delay. Several >>> months later, I am seeing this on regular basis even hourly volume is >>> not large. >>> >>> Oct 29 16:06:10 pmx1 postfix/smtp[7414]: 200AC43831: >>> to=<u...@domain.com>, relay=none, delay=40, delays=0.01/0/40/0, >>> dsn=4.4.1, status=deferred (connect to >>> mail.domain.com[96.57.168.248]:25: Connection timed out) >> >> this is clearly a *network* problem on the server *or* the client >> *or* somewhere between (routers, switches....)
