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Old 3 Dec 2019, 07:29 PM   #7
JeremyNicoll
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Join Date: Dec 2017
Location: Scotland
Posts: 298
Right at the start the OP said:

if address :is "From" "do-not-reply.validEmailAddress.com" { ...

so maybe the address is syntactically valid but not recognised by the mail host at that domain?

Maybe not only are you not supposed to reply to it, but it actually does not exist so you cannot reply to it?

Maybe the actual sender's address is something else?
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