HowtoForge Forums | HowtoForge - Linux Howtos and Tutorials

HowtoForge Forums | HowtoForge - Linux Howtos and Tutorials (http://www.howtoforge.com/forums/index.php)
-   HOWTO-Related Questions (http://www.howtoforge.com/forums/forumdisplay.php?f=2)
-   -   ISPs blocking smtp-auth on port 25 (http://www.howtoforge.com/forums/showthread.php?t=1582)

oneinchpunch 8th December 2005 01:30

ISPs blocking smtp-auth on port 25
 
Regarding: "Virtual Users And Domains With Postfix, Courier And MySQL"
http://www.howtoforge.com/virtual_po..._quota_courier


I set this up to use for smtp-auth, and am finding that SBC is (at the least, other ISPs may also be) filtering outgoing connections from its dialup and DSL customers to port 25, so it doesn't work so well. (Ref. http://support.sbcglobal.net/article.php?item=4640 ). Now, they suggest listening on port 587 as per RFC 2476 ( http://www.faqs.org/rfcs/rfc2476.html ), but I've already got customers using it on port 25. Listening on both ports would work great.

Will postfix listen on multiple ports or can I run multiple instances of smtpd simultaneously? What do I need to update in the config for this?

Thanks.

oneinchpunch 8th December 2005 02:36

here's the master.cf modification for listening on multiple ports
 
FYI: I added the following line in /etc/postfix/master.cf to have it listen on port 587, in case you feel like adding it to the howto.

587 inet n - - - - smtpd

-oip


All times are GMT +2. The time now is 06:36.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.