>From the logs:
Setting up dovecot-core (1:2.2.33.2-1ubuntu4.1) ...
chgrp: invalid group: ‘dovecot’
dpkg: error processing package dovecot-core (--configure):
installed dovecot-core package post-installation script subprocess returned
error exit status 1
Setting up libncurses5:amd64 (6.1-1ubuntu1.18.04) ...
The dovecot-core postinst script adds a dovecot user and group before issuing
that chgrp call:
adduser --system --group --home /usr/lib/dovecot --gecos "Dovecot mail
server" \
--no-create-home --disabled-password --quiet dovecot || true
...
chgrp dovecot /etc/dovecot/$conffile
Do you have a dovecot group created? Can you paste:
id dovecot
getent group dovecot
getent passwd dovecot
Do you have users in a remote network database such as NIS or LDAP?
** Changed in: dovecot (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1785584
Title:
package dovecot-core 1:2.2.33.2-1ubuntu4.1 failed to install/upgrade:
installed dovecot-core package post-installation script subprocess
returned error exit status 1
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https://bugs.launchpad.net/ubuntu/+source/dovecot/+bug/1785584/+subscriptions
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