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。

Avatar for Username

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

话题已存档。 如果需要帮助请提出新问题。

why do I get an error on sent messages after changing ISP using thunderbird

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

Me
Me
more options

I changed ISP from Plusnet to 4Ginternet. I still have a Plusnet email account. Now when I try and send emails using Thunderbird I get this error message:
'An error occurred while sending mail. The mail server responded:
<[REDACTED BY MODERATOR]@btinternet.com> recipient rejected - relay denied.
Please check the message recipient "[REDACTED BY MODERATOR]@btinternet.com" and try again.'
It does not matter who the recipient is; same message.
If I reconnect to the Plusnet router then emails are sent successfully. So nothing in settings has been changed. Similarly using Plusnet webmail page sending emails works.
Who is at fault, 4G, Thunderbird or Plusnet, me?
Very confusing and annoying

[Personal information removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

I changed ISP from Plusnet to 4Ginternet. I still have a Plusnet email account. Now when I try and send emails using Thunderbird I get this error message:<br/> 'An error occurred while sending mail. The mail server responded: <br/> <''[REDACTED BY MODERATOR]''@btinternet.com> recipient rejected - relay denied.<br/> Please check the message recipient "''[REDACTED BY MODERATOR]''@btinternet.com" and try again.'<br/> It does not matter who the recipient is; same message. <br/> If I reconnect to the Plusnet router then emails are sent successfully. So nothing in settings has been changed. Similarly using Plusnet webmail page sending emails works.<br/> Who is at fault, 4G, Thunderbird or Plusnet, me?<br/> Very confusing and annoying ''[Personal information removed by moderator. Please read [[Forum rules and guidelines]], thanks.]''

由Chris Ilias于修改

所有回复 (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

how did you change your settings in Thunderbird to accommodate the change to 4Ginternet?

There are a number of possibilities, but basically it sounds like either you have updated Thunderbird to send mail using your 4g SMTP server and your plusnet address, so the 4g is refusing to accept outgoing mail for some other mail server, or You have set Thunderbird to send mail to your old SMTP where you no longer have an account to send mail so the recipient is not accepted as you are not able to authenticate.

Perhaps is you were to go to the troubleshooting information on the help menu of Thunderbird and copy that to the clipboard and paste it into a reply on the forum I might be able to guess which it is.