Date: Wed, 21 Nov 2012 07:36:27 -0800 (PST) From: Unga <unga888@yahoo.com> To: Ilya Kazakevich <kazakevichilya@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Bind99 stopped resolving for external queries Message-ID: <1353512187.68024.YahooMailNeo@web161902.mail.bf1.yahoo.com> In-Reply-To: <CAHv=rM2EjsTGHtRwwfywrMyyrXhA8ON3UxFjV7-L%2BhsnHyAogg@mail.gmail.com> References: <1353498387.59705.YahooMailNeo@web161902.mail.bf1.yahoo.com> <CAHv=rM2EjsTGHtRwwfywrMyyrXhA8ON3UxFjV7-L%2BhsnHyAogg@mail.gmail.com>
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Hi IIya=0A=0AThank you for your reply. =0A=0A>Hello,=A0=0A=0A>=0A>=0A>=0A>>= >From my laptop if I ping the server:=0A>>ping www.mydoamin.com=0A>>ping: ca= nnot resolve www.mydoamin.com: Host name lookup failure=0A>>=0A>>But if I l= og in to the server and do the same ping, it works fine.=0A>>=0A>>=0A>=0A>= =0A>1) check your laptop is configured to work with this DNS server (cat /e= tc/resolv.conf on laptop or "ipconfig /all | findstr DNS" in case of window= s )=0A=0AMy laptop and the server are in two different countries. Btw, lapt= op also run FreeBSD.=0A=0A=0A=0A>2) check server is accessible (ping <YOUR_= SERVER_IP> from laptop)=0A=0AYes, the server is accessible (ping <YOUR_SERV= ER_IP> from the laptop.=0A=0A=0A>3) check server is accessible via TCP/53 (= "telnet=A0<YOUR_SERVER_IP>=A053" from your laptop)=A0=0A=0ANo, there was a = reverse DNS error here. It was pointing to the Reverse DNS server of the da= ta centre.=0A=0ANow its been corrected:=0A=0Atelnet <YOUR_SERVER_IP> 53=0AT= rying <YOUR_SERVER_IP>...=0AConnected to ns1.mydomain.com.=0AEscape charact= er is '^]'.=0A=0A>4) check firewall on server and/or devices between server= and laptop, it may block requests=0A=0ANo firewall on the server yet. =0A= =0A=0A>5) check your server is configured to use the same DNS:=A0cat /etc/r= esolv.conf=A0=0A>=0Anameserver 127.0.0.1=0Anameserver other_ip1=0Anameserve= r other_ip2=0A=0A=0AAlthough the Reverse DNS is now been corrected, still c= annot ping as from the laptop:=0Aping www.mydomain.com=0Aping: cannot resol= ve www.mydomain.com: Host name lookup failure=0A=0AAny ideas?=0A=0ARegards= =0AUnga
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