First, you need to determine the reason for rejection. If it is something simple, like a misspelled name or your social security number was entered incorrectly, then you only need to correct the mistaken information, and re-submit for electronic filing. If the issue is something more, you may need to contact the IRS at www.irs.gov or at 1-800-829-1040 and find out what you need to do to correct the problem with your return. It is possible that you will not be able to file electronically due to some IRS regulation. In that case you will need to print out your return and mail it to the IRS.