I have a Pix 515 that was just upgraded to the 6.3(3)FOS and now I have a problem. I have an Exchange server sitting on the internal interface that is NAT'd to an external IP address which we use for email. Prior to the upgrade our INTERNAL users (10.10.X.X) could POP and SMTP email from the mail server using the public IP address (208.62.X.X). After the upgrade this is not possible. The configurations are identical from pre- to post upgrade and the old Admin here told me he had this problem before with another version of FOS. Is there ANY workaround to this? Please help, I need to have this working ASAP. Thanks.
