I know postfix returns 4xx Response Code for Temporarily Deferred, as below:
----- The following addresses had fatal errors -----[Status: Error, Address: <e...@chinabuckets.com>, ResponseCode 421, 4.7.0 Temporarily Deferred]
Message will be retried for 4 more day(s)I don't like every MTA returns this 4xx code, that would make the incoming messages delay a lot time.
How do you think of this? should RFC reconsider to disable 4xx code? regards.
