Here is another very common post on the Exchange forum by many new Exchange Admin that they have setup/installed the Exchange but they can’t send the emails. The reason is simple that you need to setup a very first send connector for your outbound email flow

Open the Exchange Admin Center —goto Mail Flow — Send Connector



Click the PLUS + button to create a ‘new send connector’



Give a suitable name to the connector – in my case it is INTERNET



Click Next and the screen below show that you need to type the name of FQDN. We will set it up as *  so it can send out email to any domain on the internet.  Then SAVEsend3


Below select the source server- I have two servers in this case and i’m going to add both of them



and here it is when you are done with creating the send connector – it is time to test your outbound emails.send5