Setting advanced DNS records

Email account wont receive

[buksida]

I have taken over maintenance of a site, the domain is hosted one one of these huge sites with terrible support (I wont name them but I'm sure a lot of you will be familiar with them). Anyway they refused transfer so I have to go in and set the DNS details (A records, C names and MX).

I have managed to set the following:

A (host)
Host Points To TTL
@ 66.000.#*$!.xxx 3600
ns.domain.com 66.xxx.xxx.xxx 3600
webmail.domain.com 66.xxx.xxx.xxx 3600
www 66.xxx.xxx.xxx 3600

CNAME
Alias Points To TTL
ftp domain.com 3600
www domain.com 3600

MX
Priority Host Goes To TTL
0 @ smtp.domain.com 3600
0 @ domain.com 3600

Pinging the site shows the DNS has resolved but now the one email account we have setup no longer receives.

It will recieve if you send it to itself but not from any other domain, is there anything
I have done wrong with the above settings?

[kwngian]

Is it because you didn't specify the ip address for smtp.domain.com?

[jtara]

Yes, you need an A record for smtp.domain.com

Also, keep in mind you cannot use a CNAME for a name referenced in an MX record. So, it MUST be an A record.

[buksida]

Thanks for the replies, it seems to be working now, have sent tests from a number of other accounts.

Would it be an idea to remove the smtp entry and just use mail.domain.com for both?

[kwngian]

Would it be an idea to remove the smtp entry and just use mail.domain.com for both?

Any reasons for having two hostname resolving to the same ip? I think you should just need one mx record unless you have a secondary backup mail server elsewhere. So just an a record for a FQDN and a mx record showing its priority should be fine.