[Mimedefang] Revisit: Filtering on HELO
les at futuresource.com
Mon Mar 26 11:59:23 EST 2007
Philip Prindeville wrote:
> Web farms, VMware, etc. all throw whatever assumptions
> we had about multi-homing out the window.
There never were any correct assumptions, which is why the RFC says you
can't reject based on your second-guesses. Even if a server handling
virtual domains has separate MX IPs for receiving mail, there is no
requirement that it has to use corresponding IP or HELO name when
sending - or that sending to other sites even be handled by the same host.
lesmikesell at gmail.com
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