Re: [Exim] Refuse connection if no MX for sending host

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Autor: Matthew Byng-Maddick
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A: Exim Users Mailing List
Assumpte: Re: [Exim] Refuse connection if no MX for sending host
On Fri, Oct 24, 2003 at 07:50:51PM -0400, Greg A. Woods wrote:
> [ On Friday, October 24, 2003 at 22:57:26 (+0100), Matthew Byng-Maddick wrote: ]
> > Subject: Re: [Exim] Refuse connection if no MX for sending host
> > That's not an answer to what Tony wrote. There is a valid email address
> > at that host, but there is no valid postmaster@<hostname> address.
> Yes, actually there is. Please learn SMTP properly before you go
> spouting such nonsense in the future.


Oh, I have, and unlike you, I can back it up with a quote:
Section 4.5.1, RFC2821:
|                                The requirement to accept mail for
|    postmaster implies that RCPT commands which specify a mailbox for
|    postmaster at any of the domains for which the SMTP server provides
|    mail service, as well as the special case of "RCPT TO:<Postmaster>"
|    (with no domain specification), MUST be supported.


If the host name is not a valid domain part (in this case it's not), then
there is no requirement for a postmaster address, which is what I said
above. The SMTP server is not providing mailservice for the domain which
is its hostname.

> > The
> > valid address is the unqualified postmaster address.
> Well, actually that's a second required-to-be-valid address.


Please go back and read the RFCs before spouting such rubbish.

MBM

--
Matthew Byng-Maddick         <mbm@???>           http://colondot.net/