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Sending of the message failed. The Outgoing server (SMTP) smtp.east.cox.net does not support the selected authentication method. Please change the 'Authenticati

Thunderbird Troubleshooting
christ1 replied
helenozee
helenozee

Ever since the last update a couple days ago, I get this when I hit send. Sometimes it takes one more try, sometimes multiple tries. How do I fix this?

Sending of the message failed. The Outgoing server (SMTP) smtp.east.cox.net does not support the selected authentication method. Please change the 'Authentication method' in 'Account Settings | Outgoing Server (SMTP)'

Ever since the last update a couple days ago, I get this when I hit send. Sometimes it takes one more try, sometimes multiple tries. How do I fix this? Sending of the message failed. The Outgoing server (SMTP) smtp.east.cox.net does not support the selected authentication method. Please change the 'Authentication method' in 'Account Settings | Outgoing Server (SMTP)'

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christ1
christ1
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Check with your email provider what the supported authentication method is, and compare that with your setting.