I've a problem to ask you to resolve if possible. I tried to search a thread like this in the community but I've had no results.
I've a DLP Prevent and a Microsoft Exchange 2003 mail server. I know that Exchange 2003 cannot act as a MTA for DLP Prevent because it doesn't meet "Requirements for configuring MTA servers with McAfee DLP" (Page 33 of McAfee Data Loss Prevention 9.3.2 Product Guide Revision A)
I would like to ask if I can use a Postfix server with after queue content filter (Postfix After-Queue Content Filter) and header_checks as external MTA (like following scheme)? Is there a best practice to do this?