Stefan Bauer writes:
No matter what i try, mailman still only connects without STARTTLS:
Earlier you wrote:
SMTPSenderRefused at /accounts/login/(530, b'5.7.0 Must issue a STARTTLS command first', 'postorius@lists.mydomain.tld') Request Method: POST Request URL: https://mm3.mydomain.tld/mailman3/accounts/login/ Django Version: 2.2.12
This looks like Django errors, not Postorius (Mailman). So this is something Django is doing, not Mailman (including Postorius). I'm not sure why Django is sending email (somebody made a password reset request seems likely, but I'm not that familiar with Django authn stuff). Anyway, if it's internal to Django, it would not consult Mailman's configs. This recent StackOverflow seems relevant:
https://stackoverflow.com/questions/60025730/530-5-7-0-must-issue-a-starttls...
HTH
Steve