24. November 2022 08:48, "Cyril - ImprovMX via mailop" <mailop@mailop.org
(mailto:mailop@mailop.org?to=%22Cyril%20-%20ImprovMX%20via%20mailop%22%20<mailop@mailop.org>)>
schrieb:
I'd love to be able to drop them, but the situation is made in a way
that we can not do anything:
That user configured their bounce domain to pass through us, but we didn't send
their bouncing email in the first place. they use another service for that.
So there's still a lot you can do:
* reject mail destined for their bounce domain at the SMTP level, that
still consumes resources but not as much as trying to queue and forward it.
* if you have valid contact details (and if they are your customer, you
should have those), get them on the phone and make it crystal clear to them
that their spam campaign needs to stop immediately.
* you might choose to exercise legal options to have them pay damages
for interfering with your business. I'm in no way legal expert for any
jurisdiction, so you'd need to discuss this with your lawyer.
Sadly, Outlook/Hotmail/Microsoft might be the least helpful in all of
this. They are too big to care.
Cheers,
Hans-Martin
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