W S said: > Folks, > I just installed BIND 9.5.0-P2 on CentOS and I see this ip address witin > 'netstat -aunt' output: > tcp <MY_IP>:<SOME_HIGH_PORT> 69.59.189.68:53 SYN_SENT > > Why my DNS box trying to contact this IP 69.59.189.68:53 ???
Thats a DNS server for an RBL service, used to block spam Email. Your mail system is trying to connect to it with TCP and it probably has a firewall in front of it blocking TCP access. $ host -t any dob.sibl.support-intelligence.net dob.sibl.support-intelligence.net name server a.support-intelligence.net. dob.sibl.support-intelligence.net name server b.support-intelligence.net. $ host a.support-intelligence.net a.support-intelligence.net has address 69.59.189.68 $ host b.support-intelligence.net b.support-intelligence.net has address 69.59.189.68
