Reverse PTR for mail

[Len Conrad]

>
>While running a check on my named configuration through DNSreport.com, I
>received an error message: your mail server has no reverse DNS (PTR) entries
>(in the following file):
>.....but it appears correct to me, and I do reference mail.policing.net with
>PTR? DO I need to add an MX record too?

# dig mail.policing.net

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

;; ANSWER SECTION:
mail.policing.net.      1D IN A         192.168.123.139

# dig -x  192.168.123.139

; <<>> DiG 8.3 <<>> -x
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;;      139.123.168.192.in-addr.arpa, type = ANY, class = IN

;; AUTHORITY SECTION:
168.192.in-addr.arpa.   1D IN SOA       blackhole.iana.org. crain.icann.org. (
                                         19971502        ; serial
                                         3H              ; refresh
                                         15M             ; retry
                                         1W              ; expiry
                                         1D )            ; minimum

You can't use RFC1918 reserved addresses internet.

Len


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