The answer is no, but the way you phrased the question makes me think there is more to the story. For example, is that the address listed on a employment application? Why did the process server go there? Out of the blue? Doubt it. In any event, you don't say what the subpoena is for, who subpoenaed you and why. If you do nothing, there is a risk a court finds you in contempt even though service is improper. If the party or attorney who issued the subpoena tells the court service is proper and provides the return of service from the process server, the court may take action because it doesn't know any better.
Answering this quetion does not establish an attorney client relation. The answer is for educational purposes only. You should consult an attorney for your circumstances.
Not normally. Not if you do not live there or work there and did not provide your father-in-law with authority to accept service for you.
Did you father in law accept it on your behalf? If he had apparent authority then I think you are served properly. However, if this is a criminal case, service is generally more scrutinized, service is generally to the specific person, although technically someone close to you can authorize it. Hopefully, your father in law just said, leave it here, if he wants it I'll give it to him
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