On Tue, Aug 25, 2015 at 10:24:48AM -0400, Wietse Venema wrote:
Milters receive the message content after Postfix has processed it, including From: and other headers that were added by Postfix itself.Milters can be implemented with Python, Perl, and (ugh) C.
Thank you! I have decided to use the native smtp_header_checks for remote delivery only. H.