Referee Contact: any solution?

My Referee's email addresses did not work.

As this person (Dr. F.H.) is my current principal and his reference concerning my candidacy is important, could a contact with you be established through e.g. direct email from your or his side, or any other way that would be suitable? Any suggestion on how he could give you the reference you require?

Thank you for your attention and consideration for the problem I’m facing.