Teacher forgot to sign on the back of the envelop

<p>My teacher just told me she sent out the recommendation but forgot to sign on the back of the sealed envelop. What should I do? Contact adm?</p>

<p>Since your school administration was responsible, I would have your school contact Michigan directly.</p>

<p>If there's any problem, then UM will not hesitate to call your teacher. Don't worry about it.</p>