We are currently experiencing mail flow backlog on the SpamTitan Cluster associated with https://us1-smtp-api.titanhq.com for a while now.  The mail delay has decreased somewhat, but there is still a backlog present.

Mail is currently flowing, but there is still a backlog of mail to be delivered.

Our teams are actively working on resolving the delays with the highest priority. We understand the inconvenience this is causing and appreciate your patience and understanding.

Continual updates on the progress of the resolution will be provided here. 

If you have any questions or concerns, please feel free to reach out to our support team.

Thanks again for your understanding.

4:45 PM ET US / 8:45 PM GMT Update:  Queues are clear, mail flow has returned to normal now.