On Wed, 21 Jun 2006, Ronan McGlue wrote:

> and also running exim -bt  [EMAIL PROTECTED] on the MTA gives me
> [EMAIL PROTECTED]
>    router = dnslookup, transport = remote_smtp
>    host 194.46.34.90        [unknown]        MX=10 ** unusable **
>    host expint.nipsa.org.uk [213.121.182.66] MX=20

This shows that nipsa.org.uk has these MX records:

nipsa.org.uk.            MX 10 194.46.34.90.
nipsa.org.uk.            MX 20 expint.nipsa.org.uk.

The first of these is invalid. The righthand side of an MX record MUST
be a DOMAIN, not an IP address. That's why Exim can't use it. But that's 
probably only peripheral to the overall problem.

-- 
Philip Hazel            University of Cambridge Computing Service
Get the Exim 4 book:    http://www.uit.co.uk/exim-book

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