Sorry my English translated by google

Thanks for your log here
Code:
Jan 25 12:50:47 dns2 named[4999]: starting BIND 9.7.3 -u bind
Jan 25 12:50:47 dns2 named[4999]: built with '--prefix=/usr' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sysco$
Jan 25 12:50:47 dns2 named[4999]: adjusted limit on open files from 1024 to 1048576
Jan 25 12:50:47 dns2 named[4999]: found 1 CPU, using 1 worker thread
Jan 25 12:50:47 dns2 named[4999]: using up to 4096 sockets
Jan 25 12:50:47 dns2 named[4999]: loading configuration from '/etc/bind/named.conf'
Jan 25 12:50:47 dns2 named[4999]: reading built-in trusted keys from file '/etc/bind/bind.keys'
Jan 25 12:50:47 dns2 named[4999]: using default UDP/IPv4 port range: [1024, 65535]
Jan 25 12:50:47 dns2 named[4999]: using default UDP/IPv6 port range: [1024, 65535]
Jan 25 12:50:47 dns2 named[4999]: listening on IPv6 interfaces, port 53
Jan 25 12:50:47 dns2 named[4999]: listening on IPv4 interface lo, 127.0.0.1#53
Jan 25 12:50:47 dns2 named[4999]: listening on IPv4 interface eth0, 109.xxx.120.167#53
Jan 25 12:50:47 dns2 named[4999]: generating session key for dynamic DNS
Jan 25 12:50:47 dns2 named[4999]: set up managed keys zone for view _default, file 'managed-keys.bind'
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 254.169.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 2.0.xxx.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 100.51.198.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 113.0.xxx.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 255.255.255.255.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6$
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6$
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: D.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 8.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 9.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: A.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: B.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 8.B.D.0.1.0.0.2.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: command channel listening on 127.0.0.1#953
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 254.xxx.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 2.0.xxx.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 100.51.198.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 113.0.xxx.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 255.255.255.255.IN-ADDR.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6$
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6$
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: D.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 8.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 9.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: A.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: B.E.F.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: automatic empty zone: 8.B.D.0.1.0.0.2.IP6.ARPA
Jan 25 12:50:47 dns2 named[4999]: command channel listening on 127.0.0.1#953
Jan 25 12:50:47 dns2 named[4999]: command channel listening on ::1#953
Jan 25 12:50:47 dns2 named[4999]: zone 0.in-addr.arpa/IN: loaded serial 1
Jan 25 12:50:47 dns2 named[4999]: zone 127.in-addr.arpa/IN: loaded serial 1
Jan 25 12:50:47 dns2 named[4999]: zone 255.in-addr.arpa/IN: loaded serial 1
Jan 25 12:50:47 dns2 named[4999]: zone jorche.it/IN: loaded serial 2012012501
Jan 25 12:50:47 dns2 named[4999]: zone verdeoro.it/IN: loaded serial 2012012501
Jan 25 12:50:47 dns2 named[4999]: zone localhost/IN: loaded serial 2
Jan 25 12:50:47 dns2 named[4999]: zone esempio.net/IN: loaded serial 2012012501
Jan 25 12:50:47 dns2 named[4999]: managed-keys-zone ./IN: loading from master file managed-keys.bind failed: file not found
Jan 25 12:50:47 dns2 named[4999]: managed-keys-zone ./IN: loaded serial 0
Jan 25 12:50:47 dns2 named[4999]: running
Jan 25 12:50:47 dns2 named[4999]: zone esempio.net/IN: sending notifies (serial 2012012501)
Jan 25 12:50:47 dns2 named[4999]: zone esempio1.it/IN: sending notifies (serial 2012012501)
Jan 25 12:50:47 dns2 named[4999]: zone esempio2.it/IN: sending notifies (serial 2012012501)
I think they are all useless queries about domains
I did a test with nslookup, the first IP on VPS1 109.223.120.167 hosting the primary DNS
Code:
Server: localhost
Address::: 1 # 53
verdeoro.it
origin = dns2.esempio.net
mail addr = admin.esempio4.net
serial = 2012012501
refresh = 3600
retry = 3600
expire = 604800
minimum = 86400
Just cash from VPS2 IP 109.xxx.120.176 with a request to the IP VPS1 109.xxx.120.167
Code:
servers 109.xxx.120.167
Default server: 109.xxx.120.167
Address: 109.xxx.120.167# 53
> Set q = SOA
> esempio2.it
;; Connection timed out; no servers Could Be Reached
Test the IP VPS2 109.xxx.120.176
Code:
Default Server: localhost
Address: 127.0.0.1 # 53
> Set q = SOA
> esempio4.net
Server: localhost
Address::: 1 # 53
esempio4.net
origin = ns1.esempio4.net
mail addr = isp.esempio4.net
serial = 2012012301
refresh = 28800
retry = 7200
expire = 604800
minimum = 86400
Test with a request from VPS1 IP 109.223.120.167 to VPS2 IP 109.223.120.176
Code:
servers 109.xxx.120.176
Default server: 109.xxx.120.176
Address: 109.xxx.120.176# 53
> Set q = SOA
> esempio4.net
;; Connection timed out; no servers Could Be Reached
and as if the external demands are not heard!
both are accessible via putty and HTTPS
and as if I had the balls in the microwave! argruu

Thanks for any help