SCS 220.127.116.1110 firewall problems
Created: 26 Jul 2007 • Updated: 21 May 2010 | 2 comments
All things being equal, just updating from an older version of SCS to the current 18.104.22.16810 patched version on several of my systems, SMTP port 25 connections are being blocked, even though the three applications I've tested that send e-mail themselves are in the programs listing as Allow All. Again, all things being equal, given that this one particular system I'm working on right now has had probably 12 different versions of SCS over the past 3 years, one updated over the next, and connects to a central server for settings and updates, has never had this particular problem until after the update to 6010. To confirm it is the Symantec Firewall in play, I disabled the firewall and rebooted and the socket errors I was getting trying to send out over port 25 no longer exist.
Very strange, because these programs themselves are (and always have been) set to Allow connections from these computers, so I'm not seeing what setting change there could be to account for this change in behavior. It would seem that our systems with just build 6000 installed (3.1 MR6) are not having a problem, so it does appear to be a bug or at least a new setting change I have yet to find in build 6010 (3.1 MR6 MP1).