I have an ASA 5505 configured on our system which has been working great up until I try to Forward port 25 to a Barracuda spam firewall. Our smtp and http both come over the same ip address xx.xx.xx.197, so on the ASA the NAT was real 192.xx.xx.115 translated to the xx.xx.xx.197. My problem is now I need the emails coming over port 25 to go to 192.xx.xx.117. So when I make the changes on the firewall for (PAT) http to go to 192.xx.xx.115 and smtp to 192.xx.xx.117, everything seemed ok except mails sent to aol are hanging in my exchange server queue. It only seems to be a problem with aol but there maybe others.
Anytime I add port address translation even if i send it to .115 i get the hang in the Queue.
I am not a Cisco expert by any shape of the imagination, I only make changes using the ASDM and am not too familiar with Cisco command line, Please don't hold that against me.