I knew I had a problem when there were only two reads tracked in the statistics, I have sent a large amount of emails via my marketing campaign and all have been suspended, although still being processed on the server.

The error recieved for each email is  - "delivery temporarily suspended: connect to aspmx3.googlemail.com[74.125.25.26]:25: Connection timed out"

I then read the following: host aspmx.l.google.com[173.194.66.26] said: 421-4.7.0 [79.125.34.215 10] Our system has detected an unusual rate of 421-4.7.0 unsolicited mail originating from your IP address. To protect our 421-4.7.0 users from spam, mail sent from your IP address has been temporarily 421-4.7.0 blocked. Please visit http://www.google.com/mail/help/bulk_mail.html 421 4.7.0 to review our Bulk Email Senders Guidelines. hk1si6296628wib.24 - gsmtp (in reply to end of DATA command)

I also noticed there is no instance showing in my AWS account as indicated on your dashboard.