[busykid]

My mail not sending too.
server1.domain.com
MX: mail.domain.com


FROM: user@domain.com TO: user@domain.com SENDING

FROM: user@yahoo.com TO: user@domain.com NOT SENDING
FROM: user@domain.com TO: user@yahoo.com NOT SENDING

What is problem? help

dig mail.domain.com

; <<>> DiG 9.7.1-P2 <<>> mail.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48839
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;mail.domain.com. IN A

;; ANSWER SECTION:
mail.domain.com. 83683 IN A 122.***.***.**

;; AUTHORITY SECTION:
domain.com. 68297 IN NS ns2.domain1.net.
domain.com. 68297 IN NS ns1.domain1.net.

;; ADDITIONAL SECTION:
ns2.domain1.net. 1305 IN A 122.***.***.**
ns1.domain1.net. 270 IN A 122.***.***.**

;; Query time: 2 msec
;; SERVER: 192.100.0.1#53(192.100.0.1)
;; WHEN: Sat Oct 1 18:18:17 2011
;; MSG SIZE rcvd: 131

dig mx domain.com

; <<>> DiG 9.7.1-P2 <<>> mx domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10316
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;domain.com. IN MX

;; ANSWER SECTION:
domain.com. 70339 IN MX 10 mail.domain.com.

;; AUTHORITY SECTION:
domain.com. 68259 IN NS ns1.domain1.net.
domain.com. 68259 IN NS ns2.domain1.net.

;; ADDITIONAL SECTION:
mail.domain.com. 83645 IN A 122.***.***.**
ns1.domain1.net. 1267 IN A 122.***.***.**
ns2.domain1.net. 232 IN A 122.***.***.**

;; Query time: 2 msec
;; SERVER: 192.100.0.1#53(192.100.0.1)
;; WHEN: Sat Oct 1 18:18:56 2011
;; MSG SIZE rcvd: 147