Tech Support Email Returning Error

[whm]

The technical support email, techsupport@libertystreet.com, returns the following error message.

 Mail delivery failed: returning message to sender

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:

 

  libertyst@gmail.com

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

    SMTP error from remote mail server after pipelined 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 [libertystreet.com] with ip: [66.96.189.9] = did not pass

    550-5.7.26

    550-5.7.26  For instructions on setting up authentication, go to

    550 5.7.26  https://support.google.com/mail/answer/81126#authentication q23-20020ac87357000000b0042c2ada4b7dsi6324395qtp.749 - gsmtp

[admin]

Hi, ok gmail and Yahoo started this in February to lower the number of SPAM messages.  Looks like we need to make some more changes to fix this.  Sorry for the inconvenience.

[whm]

No problem thanks.

[whm]

So how do I get assistance with my issue?  Trying to transfer Home Manage to a new laptop, receiving error message that the code is no good, “License with the provide License_key not found".  Help would be appreciated.