On 2023-11-02 02:04, Chris Angelico via Python-list wrote:
On Thu, 2 Nov 2023 at 15:20, AVI GROSS via Python-list
<python-list@python.org> wrote:
Yes, it would be nice if there was a syntax for sending a test message sort
of like an ACK that is not delivered to the recipient but merely results in
some status being sent back such as DELIVERABLE or NO SUCH USER or even
MAILBOX FULL.
Yes, it would! Spammers would be able to use this syntax to figure out
exactly which addresses actually have real people connected to it. It
would save them so much trouble! Brilliant idea.
Which is exactly why we stopped doing it. In fact, mailing software may
even have a control to turn it back on but definitely it doesn't reply
to the request as delivered.
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