I can't help with the IMS ports, but depending on what cisco firewall/router you're running, most of them can permit/deny on source port as well as destination port. It is just not used that often. BTW, are all the response messages you mentioned below UDP?
Greg Baumgratz wrote: > Here's a question: When your mail server sends mail by smtp it goes out > on port 25. Any ideas of the range the responses will come on? When > your server receives mail, the connection will always be incoming on > port 25, but when you send messages from your server, they will go out > 25 and the responses messages will come on other ports. The reason > behind this is if in your router, you block all packets to your > mailserver other than port 25, you can receive mail without a problem, > but you can no longer send mail. I have recorded packets in the 2000s > and 3000s as reponse messages, of course coming with a source port of > 25. As far as I know, you can not permit packets in the cisco based on > source port, only destination. > > Is there a rule that defines the ports the responses will return on? > > Greg > > This is the discussion list for the IMS Free email server software. > To unsubscribe send mailto:[EMAIL PROTECTED] > > Delivered by Rockliffe MailSite > http://www.rockliffe.com/mailsite > Rock Solid Software (tm) This is the discussion list for the IMS Free email server software. To unsubscribe send mailto:[EMAIL PROTECTED] Delivered by Rockliffe MailSite http://www.rockliffe.com/mailsite Rock Solid Software (tm)
