Try this workaround (replace user by your actual user):
touch /home/user/.dovecot.lda-dupes
mkdir /home/user/.dovecot.lda-dupes.locks
chown user:user /home/user/.dovecot.lda-dupes*
If you want to know the reason for this, check this post:
Try this workaround (replace user by your actual user):
touch /home/user/.dovecot.lda-dupes
mkdir /home/user/.dovecot.lda-dupes.locks
chown user:user /home/user/.dovecot.lda-dupes*
If you want to know the reason for this, check this post: