Error Configuring Email for SMTP I have tried to configure email as an SMTP client for a Google Mail server. When I click test I get a generic "There was an error testing your email settings", but no further info in Craft log files. The error displays almost instantly, so it does not seem like a connection issue, e.g. password / username error.

Craft is latest version and site is hosted with Arcustech.
Google considers SMTP to be an "insecure" protocol when connecting to their servers.  You have to explicitly go into your account settings as described here and enable access for these "insecure" requests.