[Dovecot] Some Dovecot LDA version sends MDN rather than DSN for overquota.

[Timo Sirainen]

On 12/22/2010 08:08 PM, Mark Sapiro wrote:
> It appears that there is some version of the Dovecot LDA that is
> sending an RFC 3798 MDN rather than an RFC 3464 DSN to report
> non-delivery to a user who is over quota.

Fixed, better late than never :)
http://hg.dovecot.org/dovecot-2.1/rev/264821ba38a8
http://hg.dovecot.org/dovecot-2.1/rev/ee060d756630

The MDN sending was simply copied from Cyrus. So Dovecot isn't the only 
server sending this.