V

validation, 101

values, PowerShell, 241

verbs, PowerShell and EMS syntax, 235

versatility, system design, 102–103

virtual directories, Autodiscover, 578–579

viruses

antivirus software, 691–692

causes of outbreaks, 692

Edge Transport anti-spam and antivirus functions, 609

multiple layers of protection, 696

voicemail, integrating with faxing and e-mail, 7–8

Volume Coy Service (VSS), 523

VSS (Volume Coy Service), 523