Error 513 - Your email system must authenticate before sending mail
Description of problem
AuthSMTP is an authenticated SMTP email server - your email program, application or device must authenticate before it can send email.
Error code 513 is returned if an email program or application connects to our service and tries to send email without first authenticating.
How to resolve this problem
To resolve this problem you need to configure your email program, application or device to use SMTP authentication with your AuthSMTP username and password. We have setup guides for many of the popular programs here:
If we do not have a setup guide for your software and you cannot see where in the program you can configure SMTP authentication we recommend that you check the help files for the program or contact the vendors and ask them if it does support SMTP authentication.