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i cant wrote a Email with Firefox or Thunderbird what is wrong

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Firefox 34.0.5. Thunderbird 31.3.0 Windows 7 i cant send any E-Mails with mozilla Produkts with explorer it is possible. i tried to turn off AVIRA and COMODO Firewall but no change what is wrong.

Firefox 34.0.5. Thunderbird 31.3.0 Windows 7 i cant send any E-Mails with mozilla Produkts with explorer it is possible. i tried to turn off AVIRA and COMODO Firewall but no change what is wrong.

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https://support.mozilla.org/en-US/kb/cannot-send-messages

This forum is for Thunderbird support. Webmail using a browser is a completely different thing. Problems you may have with Thunderbird are most likely not related to any issues with Firefox.