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A comment on Ask HN: Why can't I host my own email?. Parent comment

Re:Ask HN: Why can't I host my own email? by account42 on Friday April 29, 2022 @08:55AM (#31204477)
If you get a 550 then it did NOT accept the mail. What grandparent is talking about would be the server replying with 250 OK and then neither delivering the mail nor sending a delivery failure notification.
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