RE: Strange email sending problem

> I'm assuming dilgardfoods.com has a MX record of mail.dilgardfoods.com. I
> could be wrong, of course. The HOST record of mail.dilgardfoods.com is found
> but the 66.237.1.143 address does now match in respect to the returned
> 'Name'. Your ISP should be the place to get it fixed since they provide the
> address to you. If it's a dynamically assigned address then you most likely
> cannot get it fixed.

NSLOOKUP has the ability to look up the MX records for a host:

C:\> nslookup -query=mx dilgardfoods.com

Server:  localhost
Address:  127.0.0.1

Non-authoritative answer:
dilgardfoods.com        preference = 30, mail exchanger =
sts2.cleanmessage.com
dilgardfoods.com        preference = 10, mail exchanger =
sts1.cleanmessage.com

Authoritative answers can be found from:
dilgardfoods.com        nameserver = dns41.register.com
dilgardfoods.com        nameserver = dns42.register.com
sts2.cleanmessage.com   internet address = 66.238.186.20
sts1.cleanmessage.com   internet address = 66.237.1.143
dns41.register.com      internet address = 216.21.234.91
dns42.register.com      internet address = 216.21.226.91


The "non-authoritative" part tells you that my DNS server is not
authoritative for the dilgardfoods domain, and that means that there's a
chance (however slim) that the data is out of date.  If you wanted an
authoritative answer, you could make nslookup use dns41.register.com, like
this:

C:\> nslookup
Default Server:  localhost
Address:  127.0.0.1

> server dns41.register.com
Default Server:  dns41.register.com
Address:  216.21.234.91

> set type=mx
> dilgardfoods.com
Server:  dns41.register.com
Address:  216.21.234.91

dilgardfoods.com        preference = 30, mail exchanger =
sts2.cleanmessage.com
dilgardfoods.com        preference = 10, mail exchanger =
sts1.cleanmessage.com
dilgardfoods.com        nameserver = dns41.register.com
dilgardfoods.com        nameserver = dns42.register.com
> exit