This comprehensive administrator's reference covers the full range of server and client deployments, unified communications, security features, performance opti... » 

This comprehensive administrator's reference covers the full range of server and client deployments, unified communications, security features, performance optimization, troubleshooting, and disaster recovery. It also includes four chapters on security policy, tools, and techniques to help protect messaging systems from viruses, spam, and phishing. Written by expert authors Walter Glenn and Scott Lowe, this reference delivers comprehensive information to deploy and operate effective, reliable, and security-enhanced messaging and collaboration services. «