Citeren "Trever L. Adams" <trever@middleearth.sapphiresunday.org>:

With a recent update, I started seeing this:

doveconf: Fatal: Error in configuration file
/etc/dovecot/conf.d/10-ssl.conf line 14: ssl_cert: Can't open file
/etc/letsencrypt/live/SERVER/fullchain.pem: Permission denied

1 4 * * * vmail /usr/bin/doveadm expunge -A mailbox
MAILBOXINQUESTION savedbefore 1w

is one of the crontab entries I am seeing this for.

Is there an option to keep doveadm from trying to use the ssl cert
from that configuration file? I do not want to have the vmail user
having access to the pem cert.

Rename your existing 10-ssl.conf to 10-ssl.conf.ext and make it
readable by root only. Now create a new 10-ssl.conf file with the
following content:

SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>

ssl = no

!include_try 10-ssl.conf.ext

This will cause all non-root users to disable SSL and will only enable
it when started as root.