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Old 22 Jan 2021, 02:35 AM   #1
camner
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Join Date: Jul 2002
Location: Tacoma, WA
Posts: 642
"Undelivered mail" message to email address set to autodelete

I have an email address (at FM) that has been subject to a lot of spam, and so I set a Sieve rule to silently delete any email sent to that address, and that works fine.

Recently, I have started to receive a number of "Undelivered Mail Returned to Sender" messages from "Mail Delivery System." Obviously, someone has forged headers so that the spam they are sending has the spammed email address as the sender.

What I don't understand is this: If I send an email to the address, it silently deletes. When a receiver's mail server generates an email to that same address saying that an email message is undeliverable, why doesn't the Sieve rule apply and silently delete that "Undeliverable" message?
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