tag:blogger.com,1999:blog-26775512.post6858096166857680435..comments2008-09-17T16:48:11.986+02:00Max Flodénhttp://www.blogger.com/profile/14422190564367108454noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-26775512.post-37906472131663729462008-09-17T16:26:00.000+02:002008-09-17T16:26:00.000+02:00We fixed this problem for our clients by binding sendmail to port 5190 as well as 25. There is already a sendmail option for this: O DaemonPortOptions=Name=MTA5190-v4, Family=inet, Port=5190<BR/>It may be a coincidence but as far as I know AOL instant messenger runs over port 5190 as well hence why your ISP wouldn't want to block it. Whenever we have a client who's ISP blocks port 25, we have them change the outgoing port number to 5190. Works like a charm every time!Anonymousnoreply@blogger.com