Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

When I test my mail server on https://www.testexchangeconnectivity.com/, it is able to retrieve the MX record, but then fails with this:

Attempting to resolve the host name mail.mysite.org in DNS. The host name couldn't be resolved.

Do I need to setup another record besides MX for a mail server?

share|improve this question
If you provide the actual domain name, it will be more useful in trying to troubleshoot the problem. –  user3463 Jan 28 '11 at 21:55

1 Answer 1

up vote 4 down vote accepted

You need to have an address (A) record for your mail server so that it can be resolved to an IP address. Or a CNAME record pointing to a valid address record. Without this nothing will be able to figure out how to contact your mail server.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.