Sending email as user "nobody"
Currently vshare sends email from the server as user "nobody" which is a security flaw. Many servers are now tightening things up so that you can't send mail this way, and rightfully so. Perhaps it can be considered in future versions, to have vshare send the email from the domain admin's account, or some email account that is set up just for vshare.
Re: Sending email as user "nobody"
Actually, this has nothing to do with vShare and everything to do with your PHP setup. By default, PHP sends mail out as user "nobody." vShare uses the native email engine in PHP to send out email. You can, however, change this behavior from the vShare side of the ball park by editing your email classes in vShare. You can have it send out email via SMTP as a normal user if you want.