troubleshooting Question

DNS issues and email problems

Avatar of Jim Wobig
Jim WobigFlag for United States of America asked on
DNSEmail Protocols
14 Comments1 Solution115 ViewsLast Modified:
I just started working for a company that the old admin had placed their own external DNS server on the internet and it has died.  He didn't document the server or the setting so I cant recreate.  I decided the easiest way to get their web, email, and VPN solution back up was to register with Network Solutions.  All is working properly but email which I can send/receive to most companies we work with but there are several domain that I cant send to.  It doesn't give me a non-delivery error but Exchange will say after several day that it given up on trying to deliver the message. If I do a DNS report it says the following:

"One or more addresses referenced by MX records do not have a matching reverse DNS entry" and this is what I have registered:
206.188.198.41 has mx.mycompany.com. | 70.xx.xx.10 listed.
205.178.190.41 has mx.mycompany.com. | 70.xx.xx.10 listed.

We had our ISP do a reverse lookup entry which took them four weeks but I still can send email to some domains.  Here is the revers DNS lookup;

Server: 4.2.2.1
Address: 4.2.2.1#53

Non-authoritative answer:
10.xx.xx.70.in-addr.arpa canonical name = mx.mycompany.com.

Authoritative answers can be found from:
mycompany.com
      origin = NS81.WORLDNIC.com
      mail addr = namehost.WORLDNIC.com
      serial = 114041815
      refresh = 10800
      retry = 3600
      expire = 604800
      minimum = 3600

I really need to get this fixed and appreciate any input to get this resolved.
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