Duplicate detection of delivered messages is done by the Exchange store. The store does duplicate detection based on two properties on the message - the Internet Message Id and the client submit ti...
Updated Jul 01, 2019
Version 2.0
Blog Post
What is this good for?
If a SMTP-server on the way to me duplicates a message, then I want to see that.
Especially if someone uses the same message-id twice.
I'm frightened by this: I don't want Exchange to drop mail.
How can it be switched off completely?
If a SMTP-server on the way to me duplicates a message, then I want to see that.
Especially if someone uses the same message-id twice.
I'm frightened by this: I don't want Exchange to drop mail.
How can it be switched off completely?