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Re: [spf-discuss] Re: multiple HELOs

2006-02-18 10:23:17
On Sat, 2006-02-18 at 15:39 +0100, Alex van den Bogaerdt wrote:

According to 2821:

"If the EHLO command is not acceptable to the SMTP server, 501, 500,
 or 502 failure replies MUST be returned as appropriate.  The SMTP
 server MUST stay in the same state after transmitting these replies
 that it was in before the EHLO was received."

In other words: if you reject the EHLO command, pretend it wasn't
given at all.

I'm guessing (hoping) that this isn't relevant for deferred-helo spf
rejections.

For instance, if a server initially accepts an EHLO command, can it
later reject a RCPT-TO based upon the last-accepted EHLO without being
considered in violation of the above?

I assume the answer to that is "yes".

(It would be rather silly if deferred SPF HELO tests had to look
backwards through a list of hundreds of "accepted" EHLO's to find one
that would not cause a "RCPT TO:"-time reject!)

-- 
Mark Shewmaker
mark(_at_)primefactor(_dot_)com

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