Re: [courier-users] Re: MAXRCPT per domain

Trev wrote:

>Rodrigo Severo <rodrigo.lists@fabricadeideias.com> wrote:
>
>
>
>>I'm getting a
>>
>>
>[552]
>
>
>>error on the 21st recipient and beyond, not a 4xx.
>>
>>
>
>"552 after RCPT TO" is a special case: it is actually a 4yz temporary
>error response, even though it starts with a 5! (It was defined this
>way to reduce problems caused by a small mistake in RFC 821. For an
>explanation of this, search for the word "incorrectly" in RFC 2821.)
>
>So, I think the behavior I described should still happen for you.
>
>
After seeing the relevant RFC 2821, I see that the behaviour you
described should happen to me.

>To wit (same paragraph as before, with 452 changed to 552):
>
>The server rejects the 21st recipient with a 552 response code. The
>client proceeds to the DATA phase, to complete the current transaction for
>delivery to recipients 1 through 20, and also queues another transaction
>using the same message data, for delivery to recipients 21 through N.
>
>Is this what you are experiencing?
>
Sadly not. Courier is treating the 552 error as a permanent error AFAICT.

I am not sure Courier is getting the 552 error *imeadiatly after* RCPT
TO. I can't be sure from the mail delivery status message I'm getting.
But I bet it is as I get one different UNDELIVERABLE MAIL message per
recipient after the 20th.

A client (Courier in this case) SHOULD treat a 552 error after a RCPT TO
command as 452. But the text says SHOULD and not MUST. Is this the
reason Courier doesn't treat a 552 error as 452 after RCPT TO? Or does it?


Rodrigo Severo



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