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"wayne" == wayne
"Re: [spf-discuss] Re: step by step deploment"
Thu, 22 Jan 2004 00:28:35 -0600
wayne> Somehow I seem to recall something that said that an SMTP
wayne> server isn't supposed to reject based on the HELO string,
wayne> but I can't find that and I could easily be remembering
wayne> things wrong.
Are you perhaps referring to rfc2821 Section 4.1.4 Paragraph 6:
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.
This is IMHO usually read to mean that a server may refuse to accept a
message for whatever reason except for the reason that the parameter
in the EHLO command does not correspond to the address of the client.
I'm sure there are those that argue otherwise but not among the more
active anti-SPAM practitioners many of whom reject mail for various
reasons involving the EHLO parameter.
jam
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