EFile of Federal 1120S not received by IRS.

I received a letter from the IRS yesterday stating they have not received my 1120S filing.

Checking my records, I E-Filed with Turbo tax, and received email confirmation that TbTx received the documents, and  20 minutes later, I received another email stating the the IRS accepted the filing.

 

Is there and recourse, but to mail a paper copy with the email documentation to the IRS?

 

Thanks