dig strangeness

[Tom]

Hi,

I'm trying to resolve a DNS problem between one hosting company and anything
on my server. They can't send any mail to domains on my server. I'm new at
this, so this can get confusing. However, I've come across something very
strange and can't seem to figure it out.

When I try to find the name server for the problem organization, it gives me
two different responses depending on how I ask. If I "dig mail.ajcds.org.",
it gives the correct info. If I "dig mail.ajcds.org. mx" it tells me that
the SOA identifying the name server as "marge.springfield.com." See below:

dig mail.ajcds.org.

; <<>> DiG 8.3 <<>> mail.ajcds.org.
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;      mail.ajcds.org, type = A, class = IN

;; ANSWER SECTION:
mail.ajcds.org.         36m58s IN A     208.190.178.208

;; AUTHORITY SECTION:
ajcds.org.              1d23h32m27s IN NS  NS1.SIERRATECH.COM.
ajcds.org.              1d23h32m27s IN NS  NS2.SIERRATECH.COM.

;; ADDITIONAL SECTION:
NS1.SIERRATECH.COM.     30m29s IN A     67.97.180.7
NS2.SIERRATECH.COM.     30m29s IN A     67.97.180.8

;; Total query time: 1 msec
;; FROM: www.mintecommerce.com to SERVER: default -- 64.105.113.114
;; WHEN: Wed Aug 13 23:42:01 2003
;; MSG SIZE  sent: 32  rcvd: 130


dig mail.ajcds.org. mx

; <<>> DiG 8.3 <<>> mail.ajcds.org. mx
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;;      mail.ajcds.org, type = MX, class = IN

;; AUTHORITY SECTION:
ajcds.org.              33m52s IN SOA   marge.springfield.com.
admin.springfield.com. (
                                        11              ; serial
                                        15M             ; refresh
                                        10M             ; retry
                                        1D              ; expiry
                                        1H )            ; minimum


;; Total query time: 1 msec
;; FROM: www.mintecommerce.com to SERVER: default -- 64.105.113.114
;; WHEN: Wed Aug 13 23:45:11 2003
;; MSG SIZE  sent: 32  rcvd: 95


I get the same results, even when logged on to another server or digging
another name server ("dig @ns1.sierratech.com. mail.ajcds.org. mx" still
shows marge.springfield.com. as the name server).

I don't understand why specifying the mx info when digging would return
different results. Any help would be greatly appreciated.

TIA!

Tom