Microsoft Exchange 2013 - SMTP Connector - Setup Guide

Important Points

  • First you need to make sure the address(es) you will be sending from have been authorised in our Control Panel .
  • These instructions assume your Microsoft Windows server has already been setup, you have installed Microsoft Exchange Server 2013 and your incoming email is setup and working.

Setup Steps

  • Open the 'Exchange Administration Center' (EAC)
  • In the left hand column select 'Mail Flow'
  • From the top menu bar choose 'Send Connectors'
  • Click the Add button (+), this will open the 'New Send Connector' wizard
  • Enter the name as 'AuthSMTP Smarthost'
  • Change the 'Type' to 'Custom' and click 'Next'
  • In the next step change the option to 'Route mail through smart hosts'
  • Click the add (+) button underneath to add a new smarthost
  • Enter '' in the 'Fully qualified domain name (FQDN)'field
  • Click 'Save'
  • In the next window for 'Smart host authentication' choose 'Basic authentication' and enter your AuthSMTP user name and password
  • Click 'Next'
  • In the 'Address Space' window the 'Type' should already be 'SMTP' and cost should be '1'
  • Enter '*' in the 'Fully qualified domain name (FQDN)'field, this means all mail sent to this connecter (for all domains) will be routed through this smarthost (AuthSMTP)
  • Click 'Save' and then click 'Next' in the Send connector wizard
  • For 'Source server' click add (+) and add the servers that can send via this connector
  • Click 'OK' and then 'Finish'
  • The basic setup is now complete and you should be able to send emails from your Exchange server / network
  • IMPORTANT: You will also need to disable Opportunistic TLS
  • You may also wish to change the SMTP port on which you connect to our service


  • If you have questions specifically about configuring or troubleshooting Exchange 2013 please use the Official Microsoft Exchange 2013 Documentation - due to the complexities of Microsoft Exchange we can only provide basic troubleshooting advice.