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.