Do you mean using the Events module or what kind of events are you referring to?

I'm talking about admin log event notifications like HTTP Error Code 404 Page Not Found,Cache Error,Module Load Exception etc.

Every time this admin log event notification is recevied through super user's email id but i want to config this with Host Email id that we  mentioned in  setting>server>Server Settings>Host Email (global settings for whole website).

AFAIK that email address is only used for test emails.
 

So,do you have any idea how we configure host email id as "sender" for every event notifications like HTTP Error Code 404 Page Not Found,Cache Error,Module Load Exception etc.?

Please suggest any other optiion for achieving this functionality ...

AFAIK the only current option is to change the host email adress.

Thanks Timo Breumelhof,Can you elaborate more about this because I didnot understand.

There's a default Host user for an installation and AFAIK, the email addresse of that user is used for this.

I think you'll want to review and change the default administrator user account used for the website in the Site Settings.  Just be sure that the user account you assign as the default admin has the e-mail address assigned to it that you're intending.