We've recently upgraded to an ASA 5510.
One problem that has popped up is that our TLS enabled email communications are no longer working. this is with MS Exchange, and in the System Manager you can track the message, but it never leaves. If we put the previous FW back in place the messages leave.
The setup for TLS is all done in Exchange, nothing special was done in our previous FW, as I assume to be the case with the new ASA. Since TLS is very DNS dependent I'm assuming this is some kind of DNS issue.
Has anyone every seen this behvior on the ASA?