[Solved: Missing A Record] DNS issue

Hi,

I have recently built a new DNS server and created a new zone.

I use an ESMTP server to handle mail and the new domain has been added to this.

I can send mail to gmail and other domain addresses but unable to send it to one particular domain. (DSN:Service Unavailable)

DNS appears correct and I can dig all domains etc.

Anybody know what needs to be done in order to deliver the mail from the new domain address?

R,
D.

---------- Post updated 10-10-12 at 10:21 AM ---------- Previous update was 09-10-12 at 10:52 AM ----------

Ok, so all domains are resolving but there is only one domain that I am unable to deliver mail to.

Any pointers, advise on what I should check?

Issue resolved.

The 3rd-party company had not added any host (A record) entries for the new servers that I needed to send mail from.

Once these were added, problem solved.

Thanks for updating. Marked as "Solved".