Re: [Exim] HELO acl

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Author: Suresh Ramasubramanian
Date:  
To: Nico Erfurth
CC: exim-users
Subject: Re: [Exim] HELO acl
Nico Erfurth <masta@???> wrote:
> But heuristic checks (helo-name has to match hostname) aren't an
> option. Checks for the usual faked helo-names are ok

I don't advocate that. HELO name, for certain widely forged domains, has to
come from an IP which has rDNS of that domain is all. HELO foo.yahoo.com
can come from any IP with rDNS in yahoo.com (bar,baz,whatever). 

    srs




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