I have Gsuite email setup with our own domain (firstname.lastname@example.org). I have tried to use mailgun with gsuite. Although it worked ok ish, as the number of contact increasing, bills are also increasing.
Since there is Gsuite relay service available which allows 10000 emails per day, we would like to setup our CiviCRM with it, so we can use it's full potential.
I have read this post How to use G Suite / GMail as your CiviMail Provider but not able to get SMTP working at all from civicrm's side.
We are currently using cpanel hosting and SMTP mailserver already setup on there which allows only 250 emails. Not very efficient and not sure if that causing any issue while setting up gsuite relay.
Did you manage to successfully setup Gsuite and currently using without any issue? If yes, would you please share some thoughts or tips what issue you have encountered and how you have solved it?
EDIT: I have tried to follow the steps as per the instruction on above tutorial and getting this results. I have tried different combination of ports and authentication settings on Gsuite, but no luck. I am using the email with our domain for signin email@example.com, and app specific Password to set the SMTP