[keycloak-user] Error when testing email connection

Hi, Fairly new to keycloak so do help me out with logging etc. I have logging set to info on a keycloak instance running in the docker file with a postgres database behind an nginx proxy which terminates my ssl. When I'm creating my realm, I want to set up an email address from which to send update password requests etc. However when I test connection through the admin console I get a box which says "Error: An unexpected server error has occurred". and nothing is logged. Need help with this as soon as anyone can as there've been a number of issues we've had which have caused our keycloak config to go really long. Dave