Open the Thunderbird application on your system.Restart the email client and try sending emails.Īs the error itself indicates that the connection to the server is timed out, it would be helpful to increase the server timeout value manually.Ensure that Connection Security Settings for SMTP are set to STARTTLS. Click the Edit option to change any setting which you know is incorrect currently. Now, click on the Outgoing Server (SMTP) tab and check the details for user name, Port, Secure Authentication, Connection Security Settings, etc.Open your Thunderbird email client application.Check the Outgoing Server (SMTP) Settingsįollow the given process to check and correct the account configuration settings of the Outgoing Server (SMTP) in your Thunderbird email client.Next, select the second Turn off Windows Firewall for your network and click OK. Click on the Turn Windows Firewall on or off from the left panel. Go to the Windows Firewall option in the Control Panel on your system. Still, users can try to disable both and check if emails can be sent and received via the Thunderbird email client. Solutions to the Thunderbird “Connection to Server Timed Out” ErrorĪfter knowing about the Connection timed out error and the common reasons responsible for it, one should proceed to its solutions as under.īlocking of messages in Thunderbird email client due to the Connection to server timed out error is rarely linked with third-party antivirus applications and Windows Firewall on the system. Spam detected on Port 25 by Internet Service Provider.SSL/TLS Server setting is not configured.Email blockage due to programs like Windows Firewall, Antivirus, etc.Incorrect account configuration (SMTP port) settings.Causes of the Thunderbird “Connection to Server Timed Out” Error Active connection to Thunderbird fails while downloading email to it. Try again or contact your network administrator.īoth errors represent similar issues where the email fails to send because the server has taken much time to respond to the sending request and the server time is out. The message could not be sent because the connection to Outgoing server (SMTP) timed out.
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