D

data replication, onsite, 553

data storage

Exchange Server 2007 features, 22–23

messaging security and, 675

data transmission, messaging security and, 675

database files, Exchange installation requirements, 123

Database Recovery Management tool, in Toolbox work center, 223

Database Troubleshooter tool, in Toolbox work center, 223

databases

contingency preparation for corrupted, 523–524

mailbox. See mailbox databases

public folder. See public folder databases

recovery, 538–543

DAV administrator (PFDAVADmin.exe), 471–472

day-to-day management, 72–73

DDGs (dynamic distribution groups)

creating with EMC, 378–381

creating with EMS, 385–386

default folders, 422–423

delegation of permissions

administrative roles and, 135–136, 231–233

built-in security groups and, 234

overview of, 231

deleted items

contingency preparation and, 523

Deleted Items folder, 426–427

recovering, 534–536

recovering in Outlook 2007, 569

deleted mailboxes

cmdlets for disabling/removing, 366–367

recovering, 536–538

delivering e-mail. See e-mail delivery

delivery reports, 377

demilitarized zones (DMZs)

defined, 112

protecting firewalls, 676

deployment planning, 51–55

complex organizations, 54–55

large organizations, 54

overview of, 51

simple organizations, 52–53

standard organizations, 53–54

design responsibility, 71–72

designing Exchange 2007 system. See system design

diagnostic logging, 715–720

cmdlets for adjusting levels, 720

cmdlets for retrieving levels, 715

event categories and descriptions, 716

Get-EventLogLevel, 717–720

levels, 720

dialog boxes

confirmation dialog boxes, 226

progress dialog boxes, 226

schedule dialog boxes, 228

differential backup, 524

digital signatures, 7

Disable-Mailbox, 367

disaster recovery. See also backups; recovery

from command-line, 133

focusing on reliability, 491–492

offsite replication, 552–553

onsite replication, 553

overview of, 550–551

strategies, 551–552

Tao of, 554–555

Disaster Recovery Management tool, 547

disk counters, 739–740

disk drives

bottlenecks, 740

counters, 739–740

physical and logical, 742

recommendations, 98

disk space

Exchange installation requirements, 123

LCR and, 190

Mailbox server role demands on, 95–96

overview of, 94–95

planning for growth, 96–97

recommendations, 38–39

storage policies and, 99–100

disk storage

offsite replication, 553

onsite replication, 553

disk volumes, configuring for Exchange installation, 123–124

diskperf.exe, 739

display names, 83–85

distribution groups

creating dynamic distribution groups with EMC, 378–381

creating dynamic distribution groups with EMS, 385–386

creating with EMS, 381–385

types of mail-enabled groups, 371

DMZs (demilitarized zones)

defined, 112

protecting firewalls, 676

DNS (Domain Name Service)

DNS round robin for load balancing, 507

Exchange dependence on, 42

infrastructure redundancy and, 511–512

Outlook Anywhere and, 647–648

splitting DNS servers, 164

upgrade prerequisites, 143

Document Access, 643–647

configuring, 644

EMC for configuring, 645

EMS for configuring, 645–647

overview of, 643–644

documentation

installing Exchange Server 2007 and, 110

organizational processes supporting reliability and availability, 494

recovery and, 521

domain controllers

Exchange 2007 requirements and, 44–45

infrastructure redundancy and, 511

scaling up and, 164

upgrade prerequisites, 142–143

domain model, Active Directory, 91

Domain Name Service. See DNS (Domain Name Service)

domains

accepted domains, 316–317

remote domain configuration, 266–267

downtime

cached Exchange mode and, 496

scheduled maintenance and, 492–493

DVD media, optical media recommendations, 38–39

dynamic distribution groups (DDGs)

creating with EMC, 378–381

creating with EMS, 385–386