Why do some items end up addressed to Postmaster?
If the PFA cannot find any local addresses in an item it will forward the message to the local ‘Postmaster’. This will include any mail addressed directly to the domain mailbox at the ISP, or messages with local ‘BCC’ recipients. Many mailing lists are addressed ‘TO’ the list name, with individual recipients in ‘BCC’. If users want to subscribe to mailing lists they should use a personal mailbox. If they must use their domain account you could set up a rule in the ‘Postmaster’ (= ‘Admin’) mailbox to forward items to the correct recipients.
