I suggest that Errorpage.aspx have option of sanding error notification via e-mail message. Sometimes when Dotnetnuke hangs-up becouse there is no connection to database or problem with iis or any other error, there is problem if admin not checking site for every minute, it can hapens that portal is hanged up for days.

E-mail error sending must be writen in javascript, because when iis is hanged up or framework, there is no mail sent. I have writen custom error page with mail notification. That works good, but when iis is hanged-up, mail is not sent.

I have many many iis problems, diferent providers, no meter. Only restarting iis was turn back to dnn working.

Developers please write to this thread if You think that is good improvment.