|Re: timeout after DATA + lost connection after DATA||Jeroen Geilman||6/17/10 9:57 AM|
> I have a problem with receiving mail from yandex (large mail service).
> May 21 13:30:09 mx postfix/smtpd: timeout after DATA (47440
> bytes) from forward11.mail.yandex.net[22.214.171.124]
> May 21 13:31:56 mx postfix/smtpd: lost connection after DATA
> (33439 bytes) from forward3.mail.yandex.net[126.96.36.199]
> May 21 13:32:39 mx postfix/smtpd: lost connection after DATA
> (75160 bytes) from forward14.mail.yandex.net[188.8.131.52]
> I have no problem with receiving mail from other servers.
> I have no problem when sending mail to any servers including yandex.
> At different location I have another postfix mail server that
> receiving mail from yandex.
> I tried to decrease MTU size to 1000. Also I tried switch to other
> ISP. With no result in both cases.
Did you try... oh, I dunno, *asking* yandex ?
|Re: timeout after DATA + lost connection after DATA||Alexander Moisseev||6/17/10 11:07 AM|
> Did you try... oh, I dunno, *asking* yandex ?
Yes, I did.
|Re: timeout after DATA + lost connection after DATA||Wietse Venema||6/17/10 12:25 PM|
[ Charset KOI8-R unsupported, converting... ]
> Postfix 2.7.0, FreeBSD 7.1-RELEASE
> Attached tcpdump files:
> ts-dump.cap - from my postfix server
> ya-dump.cap - from one of the yandex servers
Here is a fragment from the second file.
05:01:10.500421 184.108.40.206.25 > 220.127.116.11.52679: . ack 30840 win 64400 (DF)
At 05:01:10.500421 the client at 18.104.22.168 receives an ack
This is typical for the remainder of the session. Each time the
Your machine is announcing a large TCP window, but I suspect that
The workaround then is don't announce a huge TCP window size.
# postconf -e master_service_disable=inet
If you run an older Postfix, you will have to tweak your
|Re: timeout after DATA + lost connection after DATA||tbro...@gmail.com||4/6/14 9:55 AM|
Just wanted to say thanks. although this is an old post it was still helpful in solving the same problem for latest build.