Gmail rejecting my email as unauthenticated

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

  kennedyLLC14@gmail.com

    host gmail-smtp-in.l.google.com [172.253.63.27]

    SMTP error from remote mail server after end of data:

    550-5.7.26 This mail has been blocked because the sender is unauthenticated.

    550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.

    550-5.7.26

    550-5.7.26  Authentication results:

    550-5.7.26  DKIM = did not pass

    550-5.7.26  SPF [indyfireandice.com] with ip: [66.96.189.10] = did not pass

    550-5.7.26

    550-5.7.26  To mitigate this issue, please visit Gmail's authentication guide

    550-5.7.26 for instructions on setting up authentication:

    550 5.7.26  https://support.google.com/mail/answer/81126#authentication i5-20020a05620a404500b0076d9d0b221csi5720309qko.366 - gsmtp