Zach Callear:
> My server has been receiving a lot of spam lately where the username
> portion of the email address in the MAIL FROM command contains a UTF
> byte-order mark (BOM).
>
> With my configuration until this point:
>
> 1. Postfix does recipient verification with Dovecot LMTP, which doesn't
> care about the BOM as the envelope sender isn't being checked at that point.
What is the difference with final delivery to Dovecot?
If Dovecot is not consistent in the way it accepts mail, then that
is the problem that needs to be addressed.
Wietse
