On 2/23/21 3:11 PM, Simon Handfield via Mailman-users wrote:
However when messages are sent to mailman3 lists we're still seeing hits on the old DNS servers.
I have tried to find a config that references the old servers but have not been able to find one.
Because Mailman doesn't directly access DNS. As far as I know, there are only two pieces in Mailman core that indirectly access DNS. DMARC mitigations look up sending domain DMARC policy via the dnspython package <https://pypi.org/project/dnspython/> and if you have enabled ARC signing in Mailman via
[ARC] enabled: yes
it uses authheaders <https://pypi.org/project/authheaders/>
I don't know what these packages might be looking at to see the old servers, but as far as I know, nothing else is doing DNS lookups.
The modules that invoke these are mailman/rules/dmarc.py and mailman/handlers/arc_sign.py.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan