When Fastmail first came out they had the option to click "Bounce" on any email. It would be returned to the sender as if the address did not exist. Very handy for spammers. No list was kept, and if the spammer persisted, you just had to continue bouncing their messages.
When Fastmail first came out they had the option to click "Bounce" on any email. It would be returned to the sender as if the address did not exist. Very handy for spammers. No list was kept, and if the spammer persisted, you just had to continue bouncing their messages.