Please describe the problem:
1. right click the time/date in gnome
2. select "Adjust time/date"
3. click the "unlock" and enter admin password so you can change time
4. select "keep synchronized with internet servers"
5. (now install NTP support if you didn't already have it, maybe reboot is necessary I don't remember)
6. click the "select servers" button
7. click "add" and enter "www.cnn.com"

Actual:
It doesn't complain at all. User thinks his time is now being synchronized with the specified server.

Expected:
It should print an error because www.cnn.com is not a valid NTP server.

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I actually had a lot of problems with this because I didn't enter www.cnn.com but I entered ntp.somehost.com (which some other webpage told me was valid) and since GNOME didn't complain I thought everything was working just fine. Later I discovered that the time was different on machines which synced to the same NTP server and it turned out that this NTP server was offline.

Steps to reproduce:
1. 
2. 
3. 


Actual results:


Expected results:


Does this happen every time?


Other information: