If you e-filed it there is not a physical signature--you "sign" by entering your AGI or PIN. If you mailed it without signing the paper form, then you should wait and see if the IRS mails it back to you for a signature. Do not file again.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
