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uninterruptible power supplies (UPS), 76
universal groups, 45
update sequence numbers (USNs), 122
updates
IM client, 341
Software Update Services, 98–100
Windows Update, 98
upgrades, server
Exchange installation and, 124–25
SSL accelerator and, 303
UPN (user principal name), 286
UPS (uninterruptible power supplies), 76
URLs, 286, 302–3
URLScan, IIS Lockdown, 109, 304
U.S. Secretary of Defense Web site, 13
user principal name (UPN), 286
users
authorized, 3
IM access control, 336–39
IMAP and POP access control, 324–26
KMS enrollment, 249–51
Outlook security settings, 272–73
Outlook Web Access, 297
reading other people’s mail, 166–69
Users container, 128–29
Users group, 45
USNs (update sequence numbers), 122
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