[chuckdevguy]

[root@web1 /etc/mail/certs]# dig -x 127.0.0.1

; <<>> DiG 9.10.2 <<>> -x 127.0.0.1

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5054

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:

;1.0.0.127.in-addr.arpa.                IN      PTR

;; ANSWER SECTION:

1.0.0.127.in-addr.arpa. 1800    IN      PTR     localhost.

;; Query time: 0 msec

;; SERVER: 10.1.1.2#53(10.1.1.2)

;; WHEN: Fri Jun 19 17:32:00 EDT 2015

;; MSG SIZE  rcvd: 63

[root@web1 /etc/mail/certs]# cat /etc/hosts

::1             localhost localhost.mydomain.net
127.0.0.1       localhost localhost.mydomain.net
10.1.1.39       web1.ctest.net  web1
10.1.1.39       web1.ctest.net.

same results with : 

::1               localhost  web1.ctest.net  web1 web1.ctest.net.
127.0.0.1      localhost  web1.ctest.net  web1 web1.ctest.net.