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Re: Strict RFC x821 Compliant: HELO/EHLO

2005-07-03 08:43:40

On Sat, 2 Jul 2005, Claus Assmann wrote:
On Sat, Jul 02, 2005, Hector Santos wrote:

[Please do NOT Cc' me.]

I suggest setting a Reply-To header if you don't want people to CC: you.

220 zardoc.esmtp.org ESMTP sendmail X.0.0.Alpha4.0
helo 65.10.44.25
250 zardoc.esmtp.org Hi there

This would be an illegal syntax per the ABNF:

How do you know it's not a domain? Do you perform a DNS lookup?

See the discussion in RFC 1123 section 2.1: "a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the highest-level
component label will be alphabetic."

Tony.
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