Re: [Exim] RFC ?

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Author: Exim Users Mailing List
Date:  
To: Exim Users Mailing List
Subject: Re: [Exim] RFC ?
[ On Wednesday, October 31, 2001 at 17:30:55 (+0000), Pete Barnwell wrote: ]
> Subject: [Exim] RFC ?
>
> Can any knowledgeable person please tell me which RFC says you must use a
> FQDN in HELO? (And where I can find a copy).


Not just any FQDN -- It must be _the_ canonical _hostname_ for the client.
I.e. a hostname that resolves to an A record matching the client source
address.

(or a properly formatted literal representation of the client's source
IP address, eg. "[127.0.0.1]")

RFC 1123 Section 5.2.5 (and/or whatever relevant section from RFC 2821)

-- 
                            Greg A. Woods


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