Ryan, Looking at your 'conditions', what you're trying to do looks like its already handled by an existing milter
https://www.benzedrine.ch/milter-regex.html How are your requirements different than what that provides? Rob On Fri, Aug 24, 2018, at 11:42 AM, Ryan Beethe wrote: > I am developing a milter application to enforce certain properties of > both header From and envelop From fields of emails, both outgoing and > incoming to my server. > > While reading through recent traffic on this list I realized that my > current rules were too strict and would break basically all mailling > lists. So I am re-writing my rules, and I would like feedback on how > these rules will fare "in the wild", by those of you with more > experience with mail servers than I have. > > So, pending a rewrite, my smilter will reject mail (550) under the > following conditions: > > - Mail with unparsable header From or Sender > - SASL-auth'd mail w/ hdr From addr not controlled by user > - Non-SASL mail w/ env From matching my domain > - Non-SASL mail w/ Sender matching my domain > - Non-SASL mail w/o Sender: and hdr From matching my domain > > Looking at the headers from mailing lists I am a part of... These should > work fine for the mailing lists I am currently subscribed to, but I am > interested in feedback from other Postfix admins. > > Ryan
