Client configuration
Server
- Server:
mail.flpk.zentralwerk.org - Username: Username (with or without Domain)
- Password: LDAP Password
IMAP
- Port: 993
- Security: TLS
- Auth type: Password
SMTP
- Port: 465
- Security: TLS
- Auth type: Password
Mailman list configuration
It is very, very (!) important to set the in DMARC Mitigations DMARC mitigation action to Replace From: with list address and DMARC Mitigate unconditionally to yes as otherwise mails cannot be delivered reliable to everywhere when Mailman's ARC signing is bugging out again.