I have 10 sites using 877's, latest IOS 12.4.T, and all are in a mesh configuration.
Each site also has a port forward rule SMTP rule from the internet to the local Exchange 2007 server.
My issue is that if I telnet to port 25 on an Exchange server in a different site the connection fails due to some sort of conflict with the remote port forward rule. Remove the port forward rule in the remote site and the connection works.
Is there anyway around this problem?