Good day.
I want to migrate from cyrus-imap to dovecot but I can not find replacement of one feauture presented in the cyrus-imap. It is LMTP. All mail users are virtual and mail works like: username@real-domain.com -> anotherusername@fake-domain.local. I whould like to check "delivery is possable" in the exim's ACL. In the exim+cirus scheme I use Callout verification from exim to cyrus and if user's quota is exeeded callout returns fail and exim does not take message for queueing.
Dovecot has no LMTP and I see no possability to do such callouts. I tried to turn on quotas in the dovecot. Message was taken by the exim placed into exim's queue but cannot be delivered to dovecot with "local_delivery transport output: Quota exceeded" and message stays in queue for a long time.
Is any possability to chech quota usage in the exim's ACL befor taking message body ?
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