Am 26.03.2015 um 14:34 schrieb David F. Skoll:
2) How is rejecting with a 5xx code any less of a "suppression" of the data than silently discarding with a 2xx code?
* you write a mail * your server get a 5xx reject from the destination * your server generates a NDR and informs you * you write a mail * your server get a 200 repsonse * the destination silent discards you *really* don't see the difference?in the first case if the mail is important i retry, chose a different subject or even take the phone and call the other side to find out *why* it was rejected
in the second one i assume the other side just ignored my message
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