I am a lawyer in CT and practice in this area of the law. child support may only be enforced against the biological father. If your husband is not sure if he is the father, he mayhave a paternity test done. if the test comes out where your husband is not the father, then he is not required to pay any child support at all even though he is your husband. i suggest that you have the test done to confirm this one way or another. if he is the father, then the court will make an order that he pay child support.
In most jurisdictions, unless it has been established by the court that the legal father (ie the one that is listed on the birth certificate) is not the biological father, he will be responsible for child support. The way to disprove paternity is via a paternity test. Once this has been done the court will order that the birth certificate be amended to delete the non-biological father's name, and if known, add the name of the biological father. At such point, the non-biological father's financial obligations end.
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