bharathan kailath:
> Hi
>
> Jan 13 15:43:41 relay1 postfix/smtp[18476]: 5BF411611EE: to=<
> [email protected]>, relay=xxx.xxx.xxx.xxx[1xxx.xxx.xxx.xxx
> ]:25, delay=101565, delays=100962/0.02/3.4/600, dsn=4.4.1, status=deferred
> (host xxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx] said: 421 4
> .4.1 Connection timed out (in reply to end of DATA command))
>
> the above is the log from our postfix relay; the host machine is a win2007
> exchange; this happens always;
> but some mails go through some not;
>
> what i can do about this ?
Record the content of network packets with tcpdump, and find out
which of the following is the case:
1) The client does not end the message with <CR><LF>.<CR><LF>
2) The server does not recognize <CR><LF>.<CR><LF> as the end
of message. For example, because some buggy ```security''' software
does not correctly handle the case where <CR><LF>.<CR><LF> is sent
in two pieces.
Wietse
