Magento 1.9.4 - Fix SMTP Error - Exception message was: 4.7.66 TLS 1.0 and 1.1 are not supported. Please upgrade/update your client to support TLS 1.2

Job ID: 33228606

Budget: £10 – £20 GBP

We have a Magento 1.9.4 E-Commerce Store that uses an SMTP PLUGIN to send customers order emails out.

It has stopped working, showing the error below. We are running Plesk with NGinx. Looking to make the changes to fix the issue.

SMTP Pro Self Test Results
Sending test email to your contact form address: ******* from: ********. Unable to send test email.
Exception message was: 4.7.66 TLS 1.0 and 1.1 are not supported. Please upgrade/update your client to support TLS 1.2. Visit https://aka.ms/smtp_auth_tls. [AM0PR04CA0059.eurprd04.prod.outlook.com]
Please check the user guide for frequent error messages and their solutions.
Default templates exist.
Email communications are enabled.
Required database tables exist.
Testing failed, please review the reported problems and if you need further help visit the support page or contact me via ** for support.
Related categories: PHP System Admin Linux Magento Nginx