[Solution] SMTP email server error

What’s Causing This Error

This error provides additional error codes along with the error to make it easy for users to identify the issue. However, the most common causes for this error are:

• Client configuration errors.
• Authentication errors related to the user.
• Connectivity issues between the client and the server.

Solution – Here’s How To Resolve It

The most straightforward solution for this error is to identify the specific error code that follows this generic error message. However, to resolve the most likely issues, the user may complete the following steps:

1. Ensure that there are no errors within the client configuration.
2. Ensure that the user can authenticate to the server.
3. Ensure that the client has a stable and uninterrupted connection to the email server.