On Mon, 2011-02-28 at 18:28 -0800, Murray S. Kucherawy wrote: > In fact, Section 4.1.4 of RFC2821 and of RFC5321 specifically disallow > filtering based on a reverse DNS mismatch of the HELO/EHLO parameter.
In fact, no match = no emails accepted. If a sender can't be bothered to get the HELO / EHLO name right and therefore uses a bogus or non-existent name thereby emulating the behaviour of many spammers, why should we be 'bothered' to lower our security and accept emails from a site which can not be bothered to properly announce its authentic identity ? Laziness and/or sloppiness is indicative of a 'could not be bothered' attitude to security generally. Definitely don't want emails from any potentially dodgy sites. We also refuse emails lacking these headers: To, From, Date and Subject although they can be blank. Plus, of course, no Message-ID: Still 100% spam free since 1 June 2010. -- With best regards, Paul. England, EU. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
