Am 06.02.2013 22:57, schrieb Daniel L. Miller:
> Otherwise when they send a message to "u...@domian.com", the client hands it > off - the user thinks the message > actually sent when in reality they will get a rejection message some time > later your idea is completly broken email is NOT instant message it is VERY common that some destination is not available due network problems between your server and the final one or overload and that is why 4xx was invented typically a mail has up to 5 days to reach the destination maximal_queue_lifetime = 5d and no, you do your users NOT a favour by instantly give them an error back because temporary errors - if i would not be my own mailadmin and my ISP would force such a setup i would like to have my money back to say it clear
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