Probably yes, it really is legitimate.
I had a client who received the following piece of scrap paper cut into a 2″x 2″ square and taped to his front door:
He took a picture of it and texted it to my office.
It had the standard language:
My name is Marc and I’m a Salt Lake County Deputy Constable. Please contact me at phone# 801-971-1181, or, you can e-mail me at firstname.lastname@example.org. When you contact me, please Refer in docket #______. If I don’t answer, please leave a message and I will return your call as soon as I can. I usually return calls in the evenings after 6 p.m. or on the weekends. it is in your very best interest that I speak with you. Yo no hablo espanol. Por favor, tener un traductor con usted si usted no hable Ingles.
He was a little surprised when I told him that yes, this was legitimate, and we would want to find out which creditor sent him this for which debt so that we could list it in his bankruptcy.
In Utah, there are any number of people who can serve you with legal papers, (this is from the Utah Courts website), including:
Who Can Serve What?
These people can serve all process issued by Utah courts:
Sheriffs and deputy sheriffs
Constables and constables’ deputies
State-employed investigators who are authorized to serve process
Note: Law enforcement officers charge to serve process. Fees vary depending on the type of document(s) to be served.
Licensed Private Investigators may serve all forms of process in a civil proceeding, including bench warrants, although they cannot arrest anyone pursuant to bench warrant.
With some restrictions, any person over 18 who is not a party to the action or a party’s attorney can serve:
Complaints and Petitions
Small Claims Affidavits and Summonses
Anyone convicted of a felony sex offense as defined by Utah Code section 77-41-102(17), or who is a respondent in a protective order under Utah Code section 78B-7 may not serve any forms of process.
In other words, there are a lot of different people who can serve you under Utah law. The safest best is to take a picture or scan it and send it to your lawyer right away.