Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [dns]

For questions about the DNS records and configuration done by Stack Exchange Engineers to route the network traffic between browsers and servers that run the sites of the SE network

7
votes
1answer
72 views

Incorrect setting in emails server that send emails for other stack's sites

I believe that DNS settings (at least for superuser.com) is incorrect. DNS's TXT record for SPF on superuser.com is (as of Jule 18, 2018): superuser.com. 300 IN TXT "v=spf1 -...
5
votes
0answers
599 views

Allow direct IP access

The recent DNS outage caused me to lose access to the Stack Exchange network. Being a good little programmer, I tried to work around the problem: $ wget --spider stackoverflow.com Connecting to ...
11
votes
3answers
277 views

Intermittent DNS failures: ns3.serverfault.com not responding

It appears that ns3.serverfault.com (Oregon?) is not responding to DNS queries. ns1 and ns2 seem to be fine. This is causing some users to have intermittent trouble reaching Stack Exchange sites. The ...
11
votes
1answer
300 views

DNS server failure for all Stack Exchange sites

It appears the nameservers for Stack Exchange are returning SERVFAIL for all queries, meaning most users are unable to access any Stack Exchange site, or will shortly lose access once their local DNS ...
12
votes
6answers
6k views

ajax.googleapis.com blocked by OpenDNS. Confirmation?

Can anybody confirm that http://ajax.googleapis.com is blocked by OpenDNS' phishing filter? I'm asking because Stack Overflow (and maybe all others in the network) loads jQuery from this domain.
6
votes
0answers
858 views

How will SOPA affect stack overflow users outside the US?

If SOPA is passed, it is obviously going to cause a lot of trouble for sites such as those part of the Stack Exchange network. Being a European resident, I'm thinking that, if SOPA becomes a law, ...
5
votes
2answers
206 views

Are meta.stackexchange and meta.stackoverflow “one and the same”? [duplicate]

This seems counterintuitive to the vertical nature of Stack Exchange itself, but I cannot manage to browse to meta.stackexchange.com: I get redirected to meta.stackoverflow.com, instead. This is also ...
6
votes
3answers
754 views

“requires external JavaScript from another domain” error with googleapis ENABLED

I am currently getting a red banner reading: "... requires external JavaScript from another domain, which is blocked or failed to load." on StackExchange sites. I used to get a similar banner about ...
7
votes
1answer
864 views

All sites issue '400 bad hostname' if FQDN with trailing dot is present in HTTP request

See topic. This behaviour appears to be common across all sites. Tested on: stackoverflow.com serverfault.com superuser.com programmers.stackexchange.com Curl output (with headers only) below. Test ...
0
votes
1answer
96 views

Cannot load Stack Overflow on my system

When I request Stack Overflow from my home system, my system shows the following error: Oops! This page appears broken. DNS Error — Server cannot be found. Could you please help me solve ...
2
votes
2answers
134 views

Is anyone else seeing DNS problems with meta.stackoverflow.com just now?

It looks like meta.stackover.com is hiding again: alt text http://www.zygonia.net/content/binary/JustPing-09-09-05.jpg The UK test shows as ok but my ISP's DNS is reporting not found. In the ...