[Mailman-Users] list members treated as nonmembers problem

[Eric S. Johansson]

Mark Sapiro wrote:
> The poster is validated as a list member in various ways depending in
> particular on the Defaults.py/mm_cfg.py setting of
> USE_ENVELOPE_SENDER. Read the comments about this and about
> SENDER_HEADERS in Defaults.py, and also understand what headers are
> put in your message and what envelope sender is set by your MUA/MTA.

thank you.  That was exactly the clues I needed.  the problem seemed to 
be related to a friend of mine running mailman list on virtual machine 
here.  We were having all sorts of problems with SPF message rejection 
and when we tried: SENDER_HEADERS = ('sender') the problems went away 
(why? I have no idea).

so, I copied and got bit.  It's probably additionally some interaction 
between postfix and mailman in terms of what gets sent in the SMTP 
transaction but what the heck, it's working now and I can live with it.

thanks again for the help.

---eric