Hi there,
There is nothing preventing you from having all 120 domains in the configuration file on the new appliance, and redirecting Mail Exchanger records 5 domains at a time when you're ready. I would recommend to cluster the old and the new appl...
Just to clarify the terms used, a "listener" on the ESA is simply "an instance of the SMTP server listening on a TCP port". Nothing more, nothing less :) *Direction* of a message is defined by which Mail Flow Policy behaviour the incoming connection ...
Actually, DNS query to look up the key is constructed from the Signing Domain ID field of the signature ("d" tag) and the Selector ("s" tag), both of which are configured in the DKIM Signing Profile. So, you *can* publish a single key, and sign messa...
Hi Bob,
You're correct, the answer is No.
In general, there are very few similarities between a forward proxy and reverse proxy functionality (other than HTTP/S proxying itself), it's like trying to build a sports car and an offroad vehicle in one...