What is error 501 in Outlook
The SMTP 501 error occurs when you try to send an email to an invalid email address or invalid domain name. Additionally, you may run into this error from time to time due to anti-virus guards dropping your SMTP connection or if the SMTP command exceeds 512 characters (when sending the email from the command line).
How do I fix error 501
To fix the 501 not implemented error, you need to disable proxy settings. With Google Chrome, go to the settings, search proxy, and click on Open your computer's proxy settings. Computer proxy settings will open and disable the Automatic and Manual proxy setup. Save the settings and try to re-access your site.
What does Error 501 mean
Not Implemented
Error 501 is a HyperText Transfer Protocol (HTTP) status code that stands for Not Implemented. This server error response code means that your web server does not support the functionality required for access and does not recognize the request method.
What causes 501 error
The 501 not implemented error indicates that the server does not support the functionality required to fulfill the request. This is the appropriate response when the server does not recognize the request method and is not capable of supporting it for any resource (RFC7231, section 6.6.
What does error 501 mean
Not Implemented
Error 501 is a HyperText Transfer Protocol (HTTP) status code that stands for Not Implemented. This server error response code means that your web server does not support the functionality required for access and does not recognize the request method.
What is 500 and 501 error
501 FTP Response code
It differs from the 500 response code in that the server recognizes the command present but is unable to take the requested action due to a syntax error in the parameter(s) present with the command.
What is a 501 error
The 501 (Not Implemented) status code indicates that the server does not support the functionality required to fulfill the request. This is the appropriate response when the server does not recognize the request method and is not capable of supporting it for any resource.
