For the record, we also use 554 for Over Quota, but it is an interesting
topic for conversation, eg why do we even indicate a permanent failure,
when of course the person might make room in the next couple of hours.
It MIGHT be preferred to let the sender know as soon as possible, so he
can ad
Dovecot quota plugin returns code 554 5.2.2 when a user inbox is full.
Why 554 (transaction failed) instead of 552 (exceeded storage
allocation)? Im curious behind the logic as im trying to determine the
best code to use to reject a user sending more emails than their
number-of-emails-limit qu
