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Saturday, April 11th, 2020 8:00 PM

Our DNS server can no longer resolve address after updating our service/modem

We just upgraded to 300Mbps / 30Mbps & receaved a new modem & SecurityEdge.

Now our internal DNS server can no longer lookup address & our LAN workstations can't access the internet. Comcast help, please fix!


[root@dc etc]# nslookup

** server can't find NXDOMAIN

[root@dc etc]# dig
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>>
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 3360
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

; EDNS: version: 0, flags:; udp: 4096
; IN A

;; Query time: 1 msec
;; WHEN: Sat Apr 11 17:08:25 PDT 2020
;; MSG SIZE rcvd: 40



2 Messages

4 years ago

See the transparent dns proxying thread. Find a CSR and have them escalate this up a tier where they can disable SecurityEdge for the account (takes a few hours). Instant joy.

Official Employee


526 Messages

4 years ago

Thanks for taking the time to reach out to us regarding the DNS server issues. I very much appreciate your patience and greatly apologize for the delay in our response. I know how important the services are to your business and we want to do all that we can to assist. Can you please reach out through private message with your first and last name, business service address and account number or phone number?