On 5/15/2012 4:48 PM, Jussi Hirvi wrote: > On 15.5.2012 23.22, Alexander Dalloz wrote: >> It is technically impossible that the telnet to target port 25 succeeds >> from the same system on which the Sendmail gets a connection refused, >> unless Sendmail is configured to use a non-standard target port. > That is why I am baffled. :-/ > > I could use a way to see what port sendmail is actually using to make > the contact. My assumption is that when the log entry (see my orig post) > says "mailer=esmtp,", it implies port 25 - but then it really does not > make sense that the connection is refused. > > On the primary mail server (which I try in vain to contact) I see > *nothing* about the failed connections in the maillog, even though I > raised log_level to 19. You could use wireshark to monitor the network traffic and determine exactly what happens when sendmail tries to make the connection. -- Bowie