If I change IP addresses, do I need to reapply for Certification?

You do not need to re-apply for Certification if you change IP addresses.

On occasion, you may need to change IP addresses because:

  • You change mailbox providers
  • Your mailbox provider requires the change

If that happens, send an email to or submit a support ticket to:

  • Add the new IP addresses
  • Remove the old IP addresses
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