Connecting to AWS SES with Laravel

Currently working on a user registration form which (as expected) sends out an email to the registered user.

The client decided to go with AWS SES, so I have already had this configured.

.env

MAIL_DRIVER=smtpMAIL_HOST=email-smtp.eu-west-1.amazonaws.comMAIL_PORT=587MAIL_USERNAME=my_usernameMAIL_PASSWORD=my_passwordMAIL_ENCRYPTION=null 

Also defined the following credentials:

SES_KEY=keyRetrievedFromMyCredentialsInSESSES_SECRET=passwordRetrievedFromMyCredentialsInSES

And also telnet email-smtp.eu-west-1.amazonaws.com 587Trying 52.19.235.197...Connected to ses-smtp-eu-west-1-prod-345515633.eu-west-1.elb.amazonaws.com.

What could have gone wrong here?