I ahve an ASA 5510 that I am using as a firewall and I am having some issues with our external IP address being listed on SPAM lists. I know my email server in not relaying, so it has to be some other machine on the network. Is there a way I can figure that out?
Furthermore I just have a couple of policies on the ASA that allows incoming traffic for Terminal Services to be directed to a specific sever and other than that basically allow all outgoing conenction (from inside interface) to go through.
Is there someway that I can change it so that only HTTP and EMAIL can go out? And also restrict SMTP traffice to go only if it's from my mail server IP - 192.168.x.x?
I'm not too familiar with CISCO so would prefer to use the ASDM interface if at all possible. Any help is GREATLY appreciated. Thank you so much.