Revert "[Dovecot] Disable imapsync job, when auth details are wrong. Fixes...

Revert "[Dovecot] Disable imapsync job, when auth details are wrong. Fixes #4276 (#4540)" Closes #4711

This reverts commit d4e82946

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Signed-off-by: Kristian Feldsam <feldsam@gmail.com>

# Conflicts:
#	docker-compose.yml