On Wed, Feb 8, 2012 at 12:36 AM, Kumar Krishna <krishnak5891 at gmail.com>wrote: > > 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. -- Les Mikesell lesmikesell at gmail.com