There are companies that inform you of a pending domain expiration to steal the account. Know your Registrar. Legitimate registrars like GoDaddy, Host Gator, and Network Solutions will not try to con you into renewing your domain with them. When you get a domain name renewal make sure it is with the company that currently handles your domain. You may get a "Domain Name Expiration Notice" from "Domain Registry" or "Domains Listings", if they are not your registrar they are attempting to get you to register your domain with them. Sending them money and giving them your email address will authorize them to move your domain name. Often times they charge much more than your current registrar. Contact your website designer if you have any concerns.
Some registrars offer protection for you domain so it cannot be stolen. Your domain is protected to a certain degree, any transfer must be confirmed by the current owner of the domain.
Periodic Report Filing
While this is not necessarily an IT issue it does concern your business. I recevieved a notice that looks quite official. The purpose of the document was to file the Periodic Report required by the state you live in. They wanted to charge $110 to file this for my business. It costs $10 for me to do it online with the state of Colorado.
This document did look quite official. Often time we are in a hurry and just pay the fee. But we must be diligent.