I've run into a problem when my mdaemon server sends email to a domain whose MX are at Postini. After receiving a single 451 because
451 Recipients not all at same mail host - psmtp
a message that is supposed to be delivered to 2 people, gets delivered only to the first one. Is there a way to deal with this in MDaemon? Queue the message and resend it to the rest of the recipients at a later time?