Q. Why do the telephone and fax numbers in our signatures appear as hyperlinks (to nothing) in sent messages?
I have noticed that in some signatures as well and am not sure why it is happening unless people are specifically identifying their phone numbers as links when they are being added.
Email address that are identified as links when they are added - correctly function as links and will prompt an email window to pop when they are click upon. that will only happen when the workstation/laptop being used is configured correctly to pop the correct email window open.