Re: [Exim] X-UIDL

----- Original Message -----
Sent: Tuesday, April 24, 2001 12:56 AM
Subject: [Exim] X-UIDL


> I have been having some problems with the X-UIDL
> being an unusual stream of characters such as
> X-UIDL: L^\!!(l*!!c&C"!=&P"! In most cases it doesn't cause
> any problems, however when in the case of a full domain
> alias where all mail for any-username@domain1 is redirected
> to any-username@domain2 there are two sets of X-UIDL's and
> the first one then blows away the rest of the headers because
> for some reason everything that follows has a carriage return
> added and all messages come through with the headers are
> part of the message body and the message body is then
> double spaced. All other deliveries are unaffected by the odd
> X-UIDL's.
Incoming messages should not have a X-UIDL header. They are supposed to
only be used by a pop daemon so a client can avoid downloading messages it
has already copied, ie when "leave messages on server" is checked. Spammers
add an X-UIDL header to their message to try and mess with that scheme,
possibly hoping you will get multiple copies of their message (increaing the
chances you will read it)
Messages with a X-UIDL header are rejected on my server.

HTH
cya
Andrew




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