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SMTP server suddenly unreachable

  • 1 reply
  • 2 have this problem
  • 7 views
  • Last reply by Matt

krage111
krage111
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For a few year thunderbird works fine. Since today I can't send any mail. I got the following message:

ErrorMessage: Sending of the message failed. The message could not be sent using Outgoing server (SMTP) securesmtp.t-online.de for an unknown reason. Please verify that your Outgoing server (SMTP) settings are correct and try again..

I check the settings, all fine. I test the settings with Outlook and it works. I use Thunderbird 38.6.0 unter Windows 10 on two computers. Since today both have the same problem.

SMTP-Server: securesmpt.t-online.de; Port 465 with SSL/TLS 

receiving mails works fine.
For a few year thunderbird works fine. Since today I can't send any mail. I got the following message: ErrorMessage: Sending of the message failed. The message could not be sent using Outgoing server (SMTP) securesmtp.t-online.de for an unknown reason. Please verify that your Outgoing server (SMTP) settings are correct and try again.. I check the settings, all fine. I test the settings with Outlook and it works. I use Thunderbird 38.6.0 unter Windows 10 on two computers. Since today both have the same problem. SMTP-Server: securesmpt.t-online.de; Port 465 with SSL/TLS receiving mails works fine.

All Replies (1)

Matt
Matt
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  • Top 10 Contributor
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Have you contacted your provider to see if they have an issue today?