I have enabled POP3 on Exchange 2007 and I can get it to work internally using an internal FQDN as the SMTP/POP3 server.If I want to allow external clients to use POP3. What do I need to do?It looks like we already have a rule setup to allow port 25 and 110 and I can see in the monitor when I try to access POP3 but the connection is denied, not sure why though. Help!Thanks.

Hi, Please confirm whether the FQDN of the CAS could be resolved for the external user. You need to contact ISP, then add the corresponding A record. Thanks Allen