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26 February 2010, 10:46

Thunderbird 3.0.2 released

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One week after releasing security updates for its Firefox browser, the Mozilla Foundation has also updated Thunderbird. In version 3.0.2, the developers have closed several critical holes that can be exploited to compromise a system.

Reportedly, disabling the DNS pre-fetching feature is now easier. When activated, DNS pre-fetching in Thunderbird allows spammers to check whether an email has been read via links incorporated in the email message. Unlike other known web bugs that retrieve further content, Thunderbird's default pre-fetching setting resolves the included domains in advance. Special sub-domains and a dedicated name server then allow spammers to establish whether a certain query has been resolved.

The developers fixed several bugs in the IMAP protocol implementation and improved the program's overall stability. They also solved various problems when upgrading from Thunderbird 2 to Thunderbird 3 which previously caused the software to delete subdirectories that contained certain special characters. Thunderbird 3.0.2 is available to download now.

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