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....)
