Author: Dan Egli Date: To: Jonathan de Boyne Pollard CC: exim-users Subject: Re: [Exim] Re: 554 after 450 not counting as a reject?
Jonathan de Boyne Pollard wrote: > SC> should postfix be sending both a 4xx and 5xx?
>
> Yes. It received three commands. It should be (and is) sending three
> responses.
>
> SC> if so, which should exim believe?
>
> The one that applies to the relevant command (which indeed is the one that it
> reports believing).
>
I don't see that. I see the rcpt command, then the data command. The 450
code it shows should really be a 5xx code because it would indicate a
permanant error. If the user is unknown now, why should they be known in
say 4 hours? The 554 response is just an extension of the 450. 450 was
saying user not known, th 5xx code was saying no valid recipients.