yes, exactly.I changed the configuration-file as stated in my post above. Then I invited users(existing ones and new ones) to my site and nothing was sent out. Then(maybe 30 minutes) after nothing happened I restarted tomcat … and then I received an Email about recent acitivities. So somehow the configuration is working, but not for invitations.
Any ideas where to look at see if an email was sent out? Any additional logs I can check? What should be the default behaviour? Is an email sent out directly after I invite someone usually?