Could not authenticate your SMTP account.

Hi there, This has stopped working in the last few days rerouting mail through Gmail.

No change to password or emails and worked fine for years. Just treble checked the reroute email. Any ideas what is going on?

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Could not authenticate your SMTP account.

This means we were able to connect to your SMTP host, but were not able to proceed using the email/password in the settings.

Typically this error is returned when the email or password is not correct or is not what the SMTP host is expecting.

Recommended next steps:
Triple check your SMTP settings including host address, email, and password. If you have recently reset your password you will need to update the settings.
Contact your SMTP host to confirm you are using the correct username and password.
Verify with your SMTP host that your account has permissions to send emails using outside connections.