> You need to make sure that you do not have the "Refuse NULL <> Senders" > check box check under SMTP Security in iMAIL.
I think Dave has the right one to look at, but this is certainly an IMail issue, and not a Postfix issue. I have even had users ask me "What is this demon[sic] thing I see?" when talking about the Postfix dAemon messages. --Eric
