I have just been dealing with an issue where we are blocking messages because 
the message header contains 'To: GroupName'.  We reject at the end of the DATA 
phase with 'Unqualified address not permitted'.  I believe this comes from 
'verify = header_syntax' in my DATA ACL.

The sender of the message is using Apple Mail and 'GroupName' is the name of an 
address group.  He has ticked a box which says 'hide addresses of recipients' 
(or some such).  I don't have Apple Mail available to look at the details.

I have explained that the proper syntax for this is 'To: GroupName:;' but the 
sender's response is predictably 'Apple can't be wrong'.  I have also suggested 
he use the Bcc: header instead of the To: header.  The response is 'you are the 
only site which rejects my mail, so you must be wrong'.

I find it hard to believe that the sender is not getting this problem from 
other sites, so I am looking to find out if I am unusual in rejecting messages 
with unqualified addresses in the header (as opposed to the envelope).  Would 
you allow such a message in?

Thanks in advance,

Phil.
--------------------
Phil Chambers
Postmaster
University of Exeter
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