To summarize what happened on the Mozilla side, my problem at least is a consequence of a fix for LogJam. Thunderbird can't connect because the DH key is no longer considered secure, so it silently fails. No fix is coming. The best solution is to get your sysadmins to update the key. The workaround is to go into Thunderbird's config editor and change the following to False:
security.ssl3.dhe_rsa_aes_128_sha security.ssl3.dhe_rsa_aes_256_sha security.ssl3.dhe_dss_aes_128_sha security.ssl3.dhe_rsa_des_ede3_sha In some cases, some of these may need to be created first. Note: I would assume that tampering with your security settings to allow less- secure connections may not be a great long-term strategy. The workaround above works for me. If it doesn't work for you, you may have a separate problem. In that case, I'd suggest checking that the problem exists in Thunderbird as downloaded from Mozilla, then submitting a new bug to Mozilla, saying that changing these four things didn't work. They'll probably want to know your mail server's URI, protocol, port, and connection security. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1477987 Title: Thunderbird 1:31.8.0+build1-0ubuntu0.15.04.1 never asks for account password Status in thunderbird package in Ubuntu: Confirmed Bug description: After upgrading to 1:31.8.0+build1-0ubuntu0.15.04.1, Thunderbird no longer asks for an account password, and accordingly cannot access that mail account. Shows [user]@[server]: Connected to [mail server]... as status. This status is maintained indefinitely (or at least beyond the limits of my patience/distraction). Downgrading to 1:31.6.0+build1-0ubuntu1 fixes the problem, and upgrading again to 1:31.8.0+build1-0ubuntu0.15.04.1 brings the problem back. Running from a terminal, there is one message: (process:3721): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed However, this message appears for the downgraded version as well. Running Thunderbird in safe mode does not fix the problem. Expected behaviour: After launch, Thunderbird asks for password Actual behaviour: After launch, Thunderbird never actually asks for a password In addition, there is a Gmail account set up, set to connect using a stored app password, and Thunderbird successfully fetches mail for this account. The problem is only encountered for the account which requires me to enter a password. Upstream build: Problem exists there too, so have submitted https://bugzilla.mozilla.org/show_bug.cgi?id=1187297 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: thunderbird 1:31.8.0+build1-0ubuntu0.15.04.1 ProcVersionSignature: Ubuntu 3.19.0-23.24-generic 3.19.8-ckt2 Uname: Linux 3.19.0-23-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 BuildID: 20150715161744 CurrentDesktop: KDE Date: Fri Jul 24 21:01:18 2015 IncompatibleExtensions: English (GB) Language Pack - [email protected] Japanese Language Pack - [email protected] Thunderbird (default) - {972ce4c6-7e08-4474-a285-3208198ce6fd} InstallationDate: Installed on 2015-03-04 (141 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150224.1) Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so PrefSources: prefs.js user.js Profiles: Profile0 (Default) - LastVersion=31.8.0/20150715161744 (In use) SourcePackage: thunderbird UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1477987/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

