Exchange blocking duplicate messages?

Kevin Spicer kevins at BMRB.CO.UK
Fri Oct 3 18:29:33 IST 2003

On Fri, 2003-10-03 at 15:24, Hirsh, Joshua wrote:

> Has anyone run into the case where an Exchange 5.5 server will block
>messages with the same Message-ID field? In my case, if I release a
>from the quarantine, some users will never get it. It appears that it's
>because Exchange ignores the message since it already received one with
>same Message-ID (which was sent notifying the user that the attachment

I've certainly seen that behaviour with Exchange 2000.

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