On Wed, Feb 8, 2012 at 12:36 AM, Kumar Krishna krishnak5891@gmail.comwrote:
Yes, I did restarted postfix. I ran tcpdump on the mail server while connecting to it from a remote location and then analysed the dump file. It seems that the server is working fine and offering STARTTLS, but the Cisco Router en route is messing things up.
A normal router shouldn't interfere. Is this a PIX or ASA firewall? I haven't used one for a few years but you used to have to do a
no fixup protocol smtp 25
to get them to pass things correctly.