On 11/22/2016 3:06 PM, MRob wrote: > I'd like to understand the differences in the envelope fields at > points where external filtering can happen:
please see: http://www.postfix.org/ADDRESS_REWRITING_README.html http://www.postfix.org/OVERVIEW.html > Off-topic part is whether anyone knows the effects any such changes > would have on spam filtering? Minimal to none, unless you're trying to apply different filter rules depending on the recipient. In that case, the details are documented; http://www.postfix.org/documentation.html -- Noel Jones