Cannot access a website from Firefox

Question

I'm trying to access www.belgacom.be using Firefox from my Archlinux system and I get the following error:

Firefox can't find the server at www.belgacom.be

When I use Chromium, it works perfectly.

I tried deleting the ~/.mozilla directory, with no success. I've also tried running Firefox from another user session, with no luck.

I'm running the latest version of Firefox.

Any ideas?

Answer 1

I have the same problem on a fresh Archlinux installation.

My resolv.conf contains only

nameserver 192.168.1.1

(plus a few comments) It's the address of my "box" (router, modem...). It works perfectly for every other domain (Belgacom is my ISP).

I tried a ping but it fails. I installed Chromium to test and it's working but it's not working with Epiphany, so I guess it's not a problem with Firefox. Other computers (on Ubuntu) using the same address as nameserver can access to this domain.

A dig gives me this result :

; <<>> DiG 9.9.1-P1 <<>> belgacom.be
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17483
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;belgacom.be.           IN  A

;; ANSWER SECTION:
belgacom.be.        1643    IN  A   195.13.15.25

;; Query time: 67 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Mon Jul 23 02:57:59 2012
;; MSG SIZE  rcvd: 56

I fixed this problem by adding 2 old dns servers to /etc/resolv.conf :

nameserver 195.238.2.21
nameserver 195.238.2.22

Answer 2

If it works on the same machine under a different browser check if you have proxies enabled or if any of the installed addons is interfering with DNS resolution.

Since you already removed your profile folder and even tried different user sessions, my bet goes to preinstalled addons or proxies.

Close any firefox instance and try firefox -safe-mode. If this doesn't work, check that you don't have any proxy enabled.

If neither works, I've no idea what could be wrong.