Why Sixa rejects registration with my email address?

To avoid abuse and use of non-existent email addresses, Sixa does not accept registration from domains that support catch-all policy.

We identify and block disposable, one-time, throwaway, temporary email addresses with our Email Address Online Verification System.

Our validation process includes all of the following:

  1. Syntax verification
  2. DNS validation including MX record lookup
  3. Disposable email address (DEA) detection
  4. SMTP connection and availability checking
  5. Temporary unavailability detection
  6. Mailbox existence checking
  7. Catch-All testing
  8. Greylisting detection

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