Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

为提升您的使用体验,本站正在维护,部分功能暂时无法使用。如果本站文章无法解决您的问题,您想要向社区提问的话,请到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 提问,我们的支持社区将会很快回复您的疑问。

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

can't send any messages since upgrade to thunderbird 45.4.0

  • 3 个回答
  • 2 人有此问题
  • 1 次查看
  • 最后回复者为 Matt

more options

I can not currently send email from my btinternet.com email or any of the sub accounts all the ports and settings look fine and I can send from the yahoo log on page and the btmail page however I get the same error message every time The message could not be sent because the connection to Outgoing server (SMTP) smtp.mail.yahoo.com was lost in the middle of the transaction. Try again I am receiving emails fine I have tried turning my firewall off completely and following all the trouble shooting for McAfee and non of the issues or add ons exist on my email I have tried using the recommended 2 outgoing ports of 465 and 587 - 465 will not even connect to the server and 587 produces the above error message

I can not currently send email from my btinternet.com email or any of the sub accounts all the ports and settings look fine and I can send from the yahoo log on page and the btmail page however I get the same error message every time The message could not be sent because the connection to Outgoing server (SMTP) smtp.mail.yahoo.com was lost in the middle of the transaction. Try again I am receiving emails fine I have tried turning my firewall off completely and following all the trouble shooting for McAfee and non of the issues or add ons exist on my email I have tried using the recommended 2 outgoing ports of 465 and 587 - 465 will not even connect to the server and 587 produces the above error message

所有回复 (3)

more options

Tried all this no joy tried contacting bt no help say don't support thunderbird

more options

have you tried uninstalling McAfee? It is a know mail mangler.