This is an automatically generated Delivery Status Notification
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipient has been delayed:
mailer-daemon@googlemail.com
Message will be retried for 0 more day(s)
Technical details of temporary failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain googlemail.com by gmail-smtp-in.l.google.com. [2607:f8b0:4001:c01::1b].
The error that the other server returned was:
450-4.2.1 The user you are trying to contact is receiving mail at a rate that
450-4.2.1 prevents additional messages from being delivered. Please resend your
450-4.2.1 message at a later time. If the user is able to receive mail at that
450-4.2.1 time, your message will be delivered. For more information, please
450-4.2.1 visit
450 4.2.1 https://support.google.com/mail/?p=ReceivingRate h129si3894146itb.78 - gsmtp