Dime, from my own experience the key information is not in your post. About 10 years ago a cunt secretary hacked my emails and started circulating information about me in the company I worked for; nothing particularly scandalous but some very personal and intrusive gained from reviewing my sent items on issues unrelated to work that I had referred to in passing. I was later able to fire her.
The fact I was of good character in the company, was married and that said cunt secretary was recognised as a contagious little slag meant she was generally disbelieved and the shit did not stick - even though all of the stuff she circulated was true.
If people rate you and you are generally respected I would bluff it out. If your reputation is chequered, particularly anything of a sexual nature, that challenges the values of the company, or that calls your judgement or conduct into account in relation to your work, consider looking around for another job.
I find people are much more sympathetic since I have been married, but I also suspect that a boss was involved with said cunt secretary and may have put her up to it. Consider how you are generally viewed in the business.