[Mailman-Users] Fire Wall Ports - 80, 25, others?

[Stephen J. Turnbull]

Drew Tenenholz writes:

 > Is there a good reference to what ports and protocols they should
 > leave alone so we can keep working?

These can be changed in mm_cfg.py, I believe, but incoming 80 (HTTP)
and 25 (SMTP) and outgoing 25 (SMTP) cover most sites.  Incoming 443
(HTTPS) is another possibility.