Please Install the Updated Packages.

Mozilla Thunderbird is a standalone mail and newsgroup client. The RHSA-2011:1243 Thunderbird update rendered HTTPS certificates signed by a certain Certificate Authority (CA) as untrusted, but made an exception for a select few. This update removes that exception, rendering every HTTPS certificate signed by that CA as untrusted. (BZ#735483) All Thunderbird users should upgrade to this updated package, which resolves this issue. All running instances of Thunderbird must be restarted for the update to take effect.

thunderbird on CentOS 5

• http://lists.centos.org/pipermail/centos-announce/2011-September/018045.html

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Updated on 2015-03-25