Pay Pal does an even nastier version of no-reply with their Swedish customers. Their actually important support tickets are sent from service@paypal.se but if you to email an respond to an issue that Pay Pal has raised, you get an 550 error (#5.1.0 Address rejected). Which is weird because the address doesn't even signal that it's a no-reply. I would rather them send emails from no-reply@paypal.com with the only contents being that the support ticket has been updated and can be accessed by logging in to Pay Pal.