I have been using Thunderbird on my PC with Windows 10 for many months. Last week it once stopped working then started again. However, from yesterday smtpauths.bluewin.ch fails solidly. I have checked and rechecked the outgoing SMTP (smtpauths.bluewin.ch, SSL/TLS, port 465, name and normal password) and tried turning off the firewalls, all to no avail. Equally two restarts. Have tried the simplest of messages. Always get Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtpauths.bluewin.ch failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. Incoming mail is no problem, nor any other network applications.
Mehr anzeigen