We have recently learned of a fraud technique scammers are practicing via corporate checks (aka Cashier's Checks). The scheme involves sending someone a fraudulent check for them to deposit, then asking them to use the funds to send money elsewhere in payment for a job, equipment, etc.
Always remember - if it looks too good to be true, it probably is. As wonderful as it seems to receive "free" money in the mail, this rarely (if ever) happens and is likely someone attempting to get personal account information from you. Always contact the check issuer to verify its authenticity - they will be able to tell you for certain if it has been legitimately sent to you.
For more information on protecting yourself against common scams, please refer to the following resources: