"Don" == Don Lee
"Re: Re: How does one distinguish between authorizing MAIL FROM and HELO"
Mon, 29 Jan 2007 10:54:28 -0600
Don> If I may simplify - is this pointing out that mailservers
Don> that host many domains probably use a single HELO? If so,
Don> this is true of my server. I host about 50 domains, and my
Don> mailserver always says "HELO mailhost.icompute.com". HELO
Don> checking that demands that the MAIL FROM match HELO will
Don> usually fail on mail from my server.
Don> I believe that the HELO must be FQDN, but there is no
Don> requirement that it match MAIL FROM.
As I understand what Alex pointed out, it is the IP originating the
TCP connection that must match the SPF identities.
jam
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