[BUG] Renewing certificates with Let's Encrypt destroys Postfix/Dovecot configuration

[Xender]

@Xender

Where is this option located, I don’t find it ? thanks !

Thanks, I’ll dig into these files.

Where is this “Send outgoing email for domain from IP” option located, I don’t find it ?
Thanks !

[Xender]

The only noticeable difference I spotted by now in main.cf:
Mine is:

sender_dependent_default_transport_maps = hash:/etc/postfix/sender_dependent_default_transport_maps
myorigin = MYSERVERHOSTNAME.TLD
smtpd_relay_restrictions = ${{$compatibility_level} <level {1} ? {} : {permit_mynetworks permit_sasl_authenticated defer_unauth_destination}}

Your config says:

sender_dependent_default_transport_maps = hash:/etc/postfix/dependent
myorigin = /etc/mailname
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

Is this a potential problem ?

I noticed as well that I have this (not present in your config file):

smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = inet:127.0.0.1:8891