On 29/10/2020 12:06, Wolfgang Breyha via Exim-users wrote:
On 29/10/2020 12:45, Jeremy Harris via Exim-users wrote:
On 29/10/2020 11:21, Niels Kobschätzki via Exim-users wrote:
I got a message from a user that our exim apparently sends a wrong
status
code on full mailboxes.
Something like this:
550 Mailbox is full
550 5.1.1 [email protected]… User unknown
That's two separate responses. The client much have sent
a subsequent SMTP command. Without knowing what that was
it's hard to comment.
Some MTAs interpret the "missing" enhanced status code from exim and set a
default (eg. sendmail, exchange IIRC). So every 550 without x.y.z gets a
"user unknown" or something odd then.
That would be... out of spec.
It's perfectly reasonable for a server (eg. Exim) to support ESMTP
and not support ENHANCEDSTATUSCODES (RFC 2034). A client talking
to such a server should not be inventing such codes out of thin air.
--
Cheers,
Jeremy
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