Issues with SMTP Outgoing mail Windows?

Updating Password Authentication Method in Windows/Thunderbird

To ensure Thunderbird's settings are properly configured:

1. In Thunderbird, go to "Tools" > "Account Settings..."

2. Select the Outgoing Server category

3. Select your SMTP server.  Then hit "Edit..."

4. Under "Authentication Method", change the option from "Encrypted password" to "Normal Password".

Note: Normal Password authentication will not decrease the security of email transmission as that data is being delivered over a secure SSL connection.

5. Select OK to accept your changes, then OK again to close the Account Settings dialogue.