Take a look !!!
dig @ns1.xxx.pl lists.xxx.pl
; <<>> DiG 9.9.3-rpz2+rl.13208.13-P2-RedHat-9.9.3-4.P2.el6 <<>> @ns1.xxx.pl lists.xxx.pl
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 30499
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;lists.xxx.pl. IN A
NO ANSWER HERE !
So IP is missing !
Other entries like A works ok (IP is reported):
dig @ns1.xxx.pl mail.xxx.pl
; <<>> DiG 9.9.3-rpz2+rl.13208.13-P2-RedHat-9.9.3-4.P2.el6 <<>> @ns1.xxx.pl mail.xxx.pl
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2402
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;mail.xxx.pl. IN A
;; ANSWER SECTION:
mail.xxx.pl. 86000 IN A 144.76.123.66