I have entered info into my Contacts list but with some contacts when I go to use that persons details I find they are either deleted or altered. How can I prevent this continuing to happen?
Recently I have been trying to add some new contacts to my "Contacts" but later when I attempt to send a message I find that the email cannot be delivered because either the contacts details are altered or do not exist. Each time this has happened I have gone back and re-entered the details but the same thing continues.
One address which should be '@inbox.com' repeatedly comes back as "@inbox.co.nz'. Help!
iMac, OS X Mountain Lion, Intel i3 8GB memory