There are about a few states/jurisdictions that do not recognize marriages performed by someone who became a minister for the sole purpose of marrying people. In other words, by someone who does not have an active ministry. In those places such a minister does not meet the legal requirements to perform valid marriage ceremonies. To be certain of your rights, you can contact the local County Clerk's office. If they are uncertain of the validity of such a marriage ceremonies, then you can also contact the Department of Public Health. And if they cannot give you a definite answer, then you can consult with an attorney in your area.