[exim-dev] [Bug 1066] interpret some 4xx error codes from re…

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Autor: Graeme Fowler
Datum:  
To: exim-dev
Betreff: [exim-dev] [Bug 1066] interpret some 4xx error codes from remote server as permanent errors (5xx). Sometimes the Postfix MTA returns 4xx error when mailbox does not exist
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http://bugs.exim.org/show_bug.cgi?id=1066




--- Comment #15 from Graeme Fowler <graeme@???> 2011-01-16 13:41:33 ---
(In reply to comment #14)
> If this feature will be implemented, then the complementary
> "downgrade_rcpt_5xx_to_4xx" needed too. Because the "5xx Over Quota" response
> happens not once nor twice. It is not violates the standard, but when I have
> large mailing list and wish to delete dead addresses from it automatically, I
> prefer the 4xx responses for the temporary errors same as "Over Quota".


Pardon me for having a good old laugh about this now :-D

So we've gone from a single-barrel to a double-barrel way of being able to blow
your own feet off.

I'm not willing to accept either of these requests (as I have previously
explained). What next - a switch to mangle 2xx responses?

As I already wrote, RFC5321 states that the codes should be honoured and the
text informational. You're asking for a massive change to that trust model.

Graeme


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