User-Agent: Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040207 Firefox/0.8 In FireFox FAQ there is Q&A for my problem at this URL: http://texturizer.net/firefox/faq.html#email but this answer is related to M$ only. BTW: I migrated from Mozilla Email client to Mozilla ThunderBird 0.5 email client (also adviced in FAQ) but it doesn't help Reproducible: Always Steps to Reproduce: 1. on linux RH9, Untar Firefox 0.8 and execute it 2. the same for ThunderBird 0.5 3. set your email account and connection settings in your ThunderBird and FireFox 4. open this link in FireFox: http://bugzilla.mozilla.org/show_bug.cgi?id=235282 5. Click on Reporter link Actual Results: I'm getting Alert dialog with this text in it: malto is not a registered protocol OK Expected Results: Should open new mail window of already running ThunderBird with already prefilled recepient TO: which is specifaid in <a href="mailto:xxx"> link don't understand what is the problem that it can't work on linux

Mozilla/5.0 (X11; U; Linux x86_64; rv:1.7.3) Gecko/20040926 Firefox/0.10 This worksforme just fine (using version 0.8 (20040913) of Thunderbird). Reporter, I'm going to close this bug as WORKSFORME. Before reopening it, please use the newest builds of Firefox and Thunderbird. As far as I know, interoperability between the two apps has improved over previous releases. If you can still reproduce this with the new version, please feel free to reopen this.