There are many reasons to be concerned about email security. The mail that your employees send can contain company secrets or other confidential business information that could hurt your position in the marketplace if revealed. The mail that your employees receive can contain malware that could infect the machines on your network and cause you to lose data and/or impair productivity. But another, very important aspect of managing your company’s email is being prepared for it to come under legal scrutiny, either as part of a regulatory audit or in the discovery process if the company is involved in a lawsuit or even a criminal case.
I addressed this issue and how a proper email archiving system can keep you out of hot water in my blog post at
http://www.gfi.com/blog/is-your-email-a-ticking-legal-timebomb/