i think you asking before propagatem, be patient dns need time
give it for 72 hours
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btw everything looks good from my place
---------start---------------------------------
[root@sme ~]# dig citygab.ca in mx
; <<>> DiG 9.3.3rc2 <<>> citygab.ca in mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19737
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1
;; QUESTION SECTION:
;citygab.ca. IN MX
;; ANSWER SECTION:
citygab.ca. 1800 IN MX 1 mail.citygab.ca.
;; AUTHORITY SECTION:
citygab.ca. 1800 IN NS ns1.citygab.ca.
citygab.ca. 1800 IN NS ns2.citygab.ca.
;; ADDITIONAL SECTION:
mail.citygab.ca. 1800 IN A 65.111.175.217
;; Query time: 1097 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Jun 2 15:24:32 2007
;; MSG SIZE rcvd: 101