Safari says can't open web site "mail to:"


Safari has started reporting"...can't open "mail to" xxxxxxx because OSX doesn't recognize internet addresses starting with "mail to:"

But it does open them! How do I get rid of the alerts? Followed advice of my MUG but can't find anyplace in Safari to turn off the alerts. They suggested going to "Helper Files" but FIND couldn't find that.

Also, Safari has started to display certain fonts on my own web site way too small and no matter what I select in Prefs for the "Standard Font" it still displays too small.
First of all, the link should point to mailto: not mail to: - there should not be a space there. If this is on your own website, you can correct that pretty easily.