On Thu, Jun 17, 2004 at 09:08:43AM -0500, Edgar Lovecraft wrote:
> > An SMTP server MAY verify that the domain name parameter in the
> > EHLO command actually corresponds to the IP address of the client.
> > However, the server MUST NOT refuse to accept a message for this
> > reason if the verification fails: the information about verification
> > failure is for logging and tracing only.
>
> It DOES say "MUST NOT refuse to accept a message for this reason".
> It DOES NOT say "MUST NOT 5xx the HELO/EHLO command as inappropriate
> for this reason".
Actually if we really want to get picky about it, it doesn't say when
you can't reject because of the HELO/EHLO. It just says that you can't.
Period. So if it's inappropriate after the HELO, rejecting it after RCPT
BECAUSE of HELO should be equally inappropriate.
It's not dictating when you can/can't block something, it's dictating
what you can block on regardless of the place you're at in the SMTP
conversation..
--
Avleen Vig
Systems Administrator
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