When sending an email you may receive the following error:

'550 No such user here'

To avoid the error please make sure SMTP Authentication is turned on in your email program.

In MS Outlook: Tools > Account Settings > select email account > More Settings > Outgoing Server > Check "My outgoing server (SMTP) requires authentication".

Note: If you would like to send emails from your website, SMTP Authentication is still required. See more details and code samples on our Community Forums https://community.aspnix.com/t/2496.aspx