Forum Discussion
SMTP service unavailable
Can someone pls tell me how to solve this error when i tried to send an email: SMTP service unavailable: AUTH failed with "550 5.7.67 TLS 1.0 and 1.1 are not supported by your organization. Please c...
As the message suggests, you are trying to connect via outdated protocols. Enable TLS 1.2/disable older versions and try again.