Melvyn Sopacua: > On Saturday 31 January 2009 08:03:17 Wietse Venema wrote: > > Melvyn Sopacua: > > > The problem is that postfix will see "success" initially: > > > > > > - client sends > > > - postfix receives > > > - postfix relays, gets OK > > > ----> postfix deletes queued message > > > - exchange checks quota, decides mailbox is full > > > - exchange sends DSN to client > > > > Use reject_unverified_recipient, with a persistent database. This > > will check the Exchange response BEFORE accepting mail, and will > > avoid hammering the Exchange server with repeated requests. > > > > http://www.postfix.org/ADDRESS_VERIFICATION_README.html > > > VRFY i...@example.com > 252 2.1.5 Cannot VRFY user, but will take message for <i...@example.com>
POSTFIX DOES NOT USE THE VRFY COMMAND.
