<p>OK, here's my situation:
I was notified by a professor that he accidentally sent a letter for school A to school B (!?). He said he later contacted the admission office of school B and was instructed to resubmit it via email. He said he did it but hasn't received a confirmation email.</p>
<p>He said the contents of the letters were all the same except school names. But I don't know if the letter was successfully received. If not, do you think it would have a bad impression on the admission committee? Do you think I should ask the professor to make sure he receives a confirmation?</p>
<p>You should follow up with the admissions office until you get the confirmation. Don’t leave it to the reference provider to chase down. It isn’t a big deal and doesn’t reflect poorly on you, but you have a lot at stake so make sure that detail is worked out.</p>