Code:
mh1:~# dig mx harmoneehotels.com
; <<>> DiG 9.3.4 <<>> mx harmoneehotels.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17007
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;harmoneehotels.com. IN MX
;; ANSWER SECTION:
harmoneehotels.com. 86400 IN MX 10 mail.harmoneehotels.com.
;; Query time: 599 msec
;; SERVER: 213.133.98.98#53(213.133.98.98)
;; WHEN: Wed Oct 6 14:42:42 2010
;; MSG SIZE rcvd: 57
mh1:~# dig mail.harmoneehotels.com
; <<>> DiG 9.3.4 <<>> mail.harmoneehotels.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63300
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;mail.harmoneehotels.com. IN A
;; ANSWER SECTION:
mail.harmoneehotels.com. 3600 IN CNAME pop.secureserver.net.
pop.secureserver.net. 3132 IN CNAME pop.where.secureserver.net.
pop.where.secureserver.net. 286 IN A 72.167.82.11
;; Query time: 203 msec
;; SERVER: 213.133.98.98#53(213.133.98.98)
;; WHEN: Wed Oct 6 14:42:49 2010
;; MSG SIZE rcvd: 115
mh1:~#
The problem is that your MX record is pointing to a CNAME record. MX records must always point to an A record.