Re: [Exim] exchange and multidrop

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Auteur: Philip Hazel
Datum:  
Aan: V. T. Mueller
CC: exim-users
Onderwerp: Re: [Exim] exchange and multidrop
On Tue, 13 Nov 2001, V. T. Mueller wrote:

> a dozen users do POP3 to get their personal mail. A copy of their mail is
> in a multidrop-account. The latter is handled by MS exchange via some sort
> of POP3 add-on.


I don't know what a "multidrop-account" is.

> Now, if a mail is sent to a couple of persons, with the above twelve among
> those recipients, those twelve users don't get the mail twice (as
> expected) but twelve times.
>
> The exchange admin says exim does not process the messages properly.


Look at the Exim logs. See how it is processing the messages. What does
the exchange admin mean by "properly"? If there are twelve different
users, Exim will normally do twelve different deliveries. That seems
"proper" to me. :-)

A Guess: What you mean by "multidrop" is a mailbox which is read by
some fetchmail-like thing, which takes the recipients from the To: or
Cc: fields in the message. You have set up Exim to deliver messages for
all these 12 users into the same mailbox. If so, then Exim will indeed
to multiple deliveries into the same mailbox. It doesn't know that they
are all the same file and you only want one copy.

Solution: Use an intermediate alias. If user A is aliased to M and user
B is also aliased to M and a message arrives which is addressed to both
A and B, only one copy will get delivered because of Exim's
de-dupliction logic. Then you arrange for M to be delivered into your
funny mailbox.

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.