[Mimedefang] Revisit: Filtering on HELO
David F. Skoll
dfs at roaringpenguin.com
Mon Mar 26 12:40:13 EDT 2007
Kevin A. McGrail wrote:
>> The server shouldn't worry its pretty little head over such things.
>> Except in blatant cases of obvious lying (eg, client claiming to be
>> server's public IP address), the server has no right to impose
>> assumptions about what a client should use as its HELO name.
> David, in your opinion, based on the RFCs, do you agree the name should
> be bracketed IPs or a FQDN though?
Oh, yes. If the *syntax* is wrong, then the server can complain.
But it shouldn't complain if a machine HELOs as [184.108.40.206] when
the connecting address is 220.127.116.11, for example.
More information about the MIMEDefang