Hi, I need to forward all missaddressed emails to a single mailbox so carried out the instructions at this support article http://support.microsoft.com/?id=315631. Unfortunately email that is to be sent to the second SMTP server with the event sink stays in the deferred messages queue and is never delivered to the other SMTP virtual server. MailBasketMD is not an option currently as valid inbound email dissappears when it is active. I'm not saying that it a fault with the software but it just doesn't seem compatible with our current setup (migrating from Exchange 5.5 to Exchange 2003 with multiple SMTP domains). We do have an SMTP Connector on Exchange 2003 and an IMC on Exchange 5.5. All mail is checked by an AV and spam server so we use a smarthost in the SMTP connector. Has anyone had similiar problems with this dll? Thanks Ben.