If you have received an email from the IRS, it is very likely that you are being scammed.  The IRS has recently warned against identity thieves trying to get hold of your personal information by posing as the Internal Revenue Service.
This tax season, the criminals are using different tactics including phone calls and emails.  They may even use the promise of getting a tax rebate so that you will supply them your private info.
Con artists may  send out thousands of emails to find  prey.  These emails will show From "IRS" or "Internal Revenue Service" and may have

IRS logos contained within the email.  The subject line may contain different variations of "IRS notification" or "Your Tax Refund".  The email itself will give a link to click so that a refund can be claimed.  Clicking this link will take a scam victim to a fake IRS site where it asks for personal information.  This information will then be used for identity theft or may be sold to other criminals.
 
Here's some tips for avoiding IRS email scams:

1.  Never click any links or attachments  in IRS emails.
2.  Never give out any personal information
3.  If you receive phishing emails, report them to the IRS
4.  Always visit the IRS website directly
5.  Keep your computer security software up-to-date.