Sorry about that one. In fact, the other address was unreachable than. Please, keep in mind, it is the hand off from thunderbird to postfix I am interested in.
Here is a good example. Oct 29 16:57:10 pmx1 postfix/smtp[8024]: EF7454059D: to=<[email protected]>, relay=gmail-smtp-in.l.google.com[173.194.68.26]:25, delay=31, delays=0.02/0/30/0.55, dsn=2.0.0, status=sent (250 2.0.0 OK 1383080173 nl1si12576362qeb.75 - gsmtp) On Tue, Oct 29, 2013 at 5:02 PM, [email protected] <[email protected]> wrote: > > > Am 29.10.2013 21:55, schrieb [email protected]: >> Am 29.10.2013 21:46, schrieb Roman Gelfand: >>> How did you decide this is a network issue? >> >> Connection timed out? > > [harry@srv-rhsoft:~]$ telnet 96.57.168.248 25 > Trying 96.57.168.248... > telnet: connect to address 96.57.168.248: Connection timed out > > and BTW: > > mail.domain.com[96.57.168.248]:25: Connection timed out > > if you think you need to anonymize informations do *not* > use random domains: http://tools.ietf.org/html/rfc2606#section-3 > and if you need help generally avoid to do so without > very good reasons > > [harry@srv-rhsoft:~]$ host mail.domain.com > mail.domain.com has address 72.5.54.21 > >>> 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, [email protected] <[email protected]> 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=<[email protected]>, 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....)
