Hi Maye,
> The problem is: every time I send mail to this address
> I got a message from exim:
>
> all relevant MX records point to non-existent hosts:
> it appears that the DNS operator for this domain has installed an
> invalid MX record with an IP address instead of a domain name on
> the right hand side
Exim rightly generates an error here as per default
(??) configuration. You should contact the DNS maintainer for this domain
and report the mis-configuration. Basically, their DNS record looks like
this:
domain.com. IN MX 10 1.2.3.4.
This is incorrect. there should be NO IP addresses specified for an MX
record. It needs to point to a valid hostname[.domain].
Gavin