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://195.159.1.4/) 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): xulrunner-1.9.1-2.fc12.x86_64 firefox-3.5-1.fc12.x86_64 thunderbird-3.0-2.4.b3pre.hg.6a6386c16e98.fc11.x86_64 How reproducible: Allways 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. Actual results: No connection Expected results: Well.. Additional info: 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 say?
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. Thanks.
*** This bug has been marked as a duplicate of bug 508481 ***