I’ve also been trying to get setup with paid business gmail from a custom domain and using smtp-relay.gmail.com.
Haven’t got it working yet (but I’m a fumbling newbie with this stuff - so don’t write it off on my efforts thus far!)
Is anyone using smtp-relay.gmail.com without a hitch? Are there any particular settings that make or break the deal? i.e. http://crunchify.com/how-to-setup-email-for-discourse-forum-with-google-apps-smtp-relay-right-way/ suggests not to SMTP authenticate
Or is it advised that paid gmail is not a good enough dedicated email service to feature on the recommend list
Thanks!