An easy way to determine legitimacy of an unexpected email is to reply (without opening the inbound message) and ask the sender whether they intended to send you the message and/or attachment.
Symantec
We offer sales, installation, support, and training for a diverse selection of Symantec's award-winning product line. From single-PC anti-virus, anti-malware, and Internet security to Endpoint protection and data recovery products such as Backup Exec. Our expertise with these products is throughout the PC and small to mid-sized business server marketplace.