On 10/28/2010 06:58 AM, Edward Finlayson wrote:
Hi Martin,

Thanks for your response.

Unfortunately, I'm unable to have common mx servers. My clients have to have
'isolation' from one another and insist that all their 'servers' are within
their own namespace / IP range.  This means that I have to have inbound SMTP
servers (mx) within the same domain as everything else and that the IPs used
for the servers resolve in both directions. This in turn means, of course,
that the IPs have to be dedicated to purpose. The knock on effect is that I
have to have the SMTP greeting banner for a given IP address match the
domain to which it is associated in order to comply fully with the RFCs and
best practice.


This is simply not true. See my previous post on RFC2821.

--
-Eric 'shubes'


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