on our internal domain we have exchange 2010 that I have been setting up. It seems to all be working except the iphones/POP3/IMAP. They will not setup on the local network. As to not conflict with our current email my boss made me create a mail2.exampledomain.com (a record) and I routed this to the external IP address that is assigned to exchange.
We have an ASA5505 so i did the NAT and firewall rules to allow the traffic and direct it all to our exchange server.
If i'm outside of our domain I can setup POP3/IMAP/IPHONE4 and it works fine but the moment I connect to our domain it no longer works.
Has anyone else had this issue? POP3/IMAP will be setup on peoples phones that do not support exchange.
i can ping the DNS name and it routes it to the correct external IP address. I show that ping is being blocked by the ASA (as it is setup to do) so it is hitting the network correctly.