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Re: [Asrg] Re: RMX evaluation

On Thu, May 08, 2003 at 11:19:54AM -0600, Vernon Schryver wrote:
> 
>   1. an SMTP server first compares the reverse DNS name of the SMTP
>    client with the sender domain.  If they match by the usual rules
>    (e.g. user@example.com matches mailhost.example.com), then the STMP
>    client is authorized.  To prevent forgery, the usual reverse-forward
>    DNS check is made.


This doesn't work in common. A host can have only one reverse DNS
name, but deliver for many different domains. 


Hadmut
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