Represents an e-mail authentication type.

TAuthenticationType = (atNone, atLogin);

TAuthenticationType is a type used to specify the authentication type used by an E-Mail server. TAuthenticationType can one of the following values:

• atNone - no authentication is required

• atLogin - simple authentication is required (AUTH LOGIN)

You can find the authentication mechanisms supported on an E-Mail server by using the AuthSchemesSupported.