On 08/17/2010 04:08 AM, Ian Eiloart wrote:
--On 10 August 2010 06:59:42 +0100 Graham
Dave CROCKER<dhc(_at_)dcrocker(_dot_)net> writes:
DKIM and ADSP evaluation are not performed during an SMTP session,
unless the session is delayed after the crlf.crlf, and that's not
supposed to happen.
Anyone using the opendkim sendmail/postfix milter will be doing this
checking during the SMTP session.
Yes, out Exim/Spamassassin installation does DKIM (but not ADSP) evaluation
during the SMTP session.
I'm not positive, but I believe that Ironport does it that way too.
Is there anybody who *doesn't* do DNS lookups at SMTP time these days?
That's all DKIM really amounts to, and the entire mail infrastructure would
seize if we weren't (cf, blacklists).
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