Background: Exchange2000/5.5 mixed organisation with Exchange 2000 in
DMZ handling outgoing smtp traffic (We are phasing out our solaris
machine which currently handles incoming email). We (skilled.com.au)
have recently purchased a company and the bosses want their email
address to be @quest.skilled.com.au.
Our internet DNS has been setup with an A host "quest.skilled.com.au" to
point to the Ex2k server.
Our MX record for skilled.com.au points to the solaris server.
My problem is that I have found that the only way email will flow from
the internet to quest.skilled.com.au users is to enable relaying on the
smtp virtual server. If I disable relaying, the sender gets an NDR
"...smtp;550 5.7.1 Unable to relay for [EMAIL PROTECTED]"
The email is arriving at the E2k smtp so why do I need relaying enabled
to allow it to be delivered internally?
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