Red Hat Bugzilla – Bug 509530
Xulrunner will not reslove hostnames
Last modified: 2018-04-11 02:47:17 EDT
Description of problem:
After an update today xulrunner (at least both Firefox and Thunderbird) will not resolve any hostnames.
After chnaging hostnames to IP-addresses for both SMTP and IMAP-servers in Thunderbird mail works again.
I can also browse websites with IP-addresses (IE http://220.127.116.11/) but any hostname just gives the error:
Server not found
Firefox can't find the server at www.powertech.no
tcpdump does not show any hostname-lookups at all (no traffic on port 53) and the problem is present both with nscd enabled and disabled, and after invalidating hosts in nscd.
Ping works fine, browsing with a non-xulrunner browser (Opera) works fine, ssh works fine, resolving hostnames via both "host", "nslookup" and "dig" works so it is NOT a network- or DNS-issue.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Open any website in firefox
2. Check or send mail with Thunderbird and hostnames (not IP-addresses) in the server-fields.
On a side-note, Thunderbird will actually _crash_ trying to send mail with a hostname as the smtp-server. Changing to IP-address works fine.
You said its not a DNS issue , but please, indulge us. What does
$ grep ^hosts /etc/nsswitch.conf
just look at how to fix this in bug 508481
What I meant with "not a dns-issues" is that my DNS-servers are wirking fine, and other applications (ping, ssh, opera ...) is able to resolve hosts.
But you are right. Installing nss-mdns-0.10-7.fc11.x86_64 fixed the problem.
*** This bug has been marked as a duplicate of bug 508481 ***