SERVICE FEATURES
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Mailbox size
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Configurable
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500 MB (Exchange Online Kiosk user)
25 GB (Exchange Online Plan 1 user)
Unlimited (Exchange Online Plan 2 user)
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Message size limits (max attachment size)
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Configurable
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25 MB
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Recipient limits
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Configurable
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500 recipients/day
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Message rate limits
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Configurable
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30 messages/minute
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Deleted item recovery
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Configurable
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14 Days
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Deleted mailbox recovery
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Configurable
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30 Days
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CLIENT ACCESS
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Outlook 2010
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Yes
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Yes
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Outlook 2007
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Yes
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Yes
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Outlook 2003
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Yes
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No
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Outlook Anywhere (RPC over HTTPS)
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Yes
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Yes
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Outlook Cached Mode
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Yes
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Yes
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Outlook Online Mode
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Yes
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Yes (not recommended)
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Autodiscover
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Yes (for Outlook and mobile)
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Yes (for Outlook and mobile)
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Outlook Web App
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Internet Explorer 7+, Safari 3+, Firefox, Chrome
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Internet Explorer 7+, Safari 3+, Firefox , Chrome
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Outlook Web App light experience
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Almost any browser
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Almost any browser
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Yes
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Customer can set up a redirect
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Outlook Web App: session time-out
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Configurable
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Default: 6 hours
Configurable up to 24 hours.
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Public/private computer logon option
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Yes
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No
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WebReady document viewing
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Yes
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Yes
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Disable web access
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Yes
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Yes
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Instant messaging and presence connected to web
email client
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Yes
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Yes
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Macintosh support (rich client)
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Outlook for Mac 2011, Entourage 2008 Web Services
Edition
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Outlook for Mac 2011,
Entourage 2008 Web Services Edition
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IMAP
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Yes
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Yes
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POP
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Yes
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Yes
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MOBILITY
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Windows Phone 7 devices
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Yes
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Yes
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Windows Mobile devices
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Windows Mobile 5.0+
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Windows Mobile 6.0+
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Other Exchange ActiveSync devices (such as iPhone)
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Yes
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Yes
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Remote device wipe (implementation varies by mobile
device manufacturer)
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Yes
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Yes
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Customize Exchange ActiveSync security policies and
settings, including PIN/password lock
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Yes
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Yes
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Disable Exchange ActiveSync access
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Yes
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Yes
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Mobile device allow/block/quarantine
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Yes
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Yes
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Certificate-based authentication for Exchange
ActiveSync
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Yes
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No
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Over-the-air-update for Outlook Mobile
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Yes
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Yes
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Mobile SMS sync (through Exchange ActiveSync)
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Yes
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Yes
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SMS (text messaging) notifications
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Yes
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Yes
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BlackBerry (via Blackberry Enterprise Server)
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Yes
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Hosted BlackBerry service not offered during beta
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BlackBerry (via Blackberry Internet Service)
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Yes
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Yes
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EMAIL/INBOX
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“Send on behalf of” and “send as”
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Yes
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Yes
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Shared mailboxes
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Yes
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Yes
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Catch-all mailbox
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Yes
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No
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Server-side email forwarding
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Yes
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Yes
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Inbox rules
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Yes
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Yes
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Tasks
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Yes
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Yes
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Conversation view and actions (such as ignore
conversation)
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Yes
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Yes
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MailTips and MailTips customization
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Yes
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Yes
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Connected accounts (aggregate mail from multiple
external email accounts)
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No
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Yes
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CONTACTS/DIRECTORY
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Personal contacts
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Yes
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Yes
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Personal distribution groups
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Yes
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Yes
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Shared distribution groups
(in Global Address List)
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Yes
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Yes—managed via web or synchronized from Active
Directory
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Restricted distribution groups
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Yes
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Yes
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Dynamic distribution groups
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Yes
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Yes
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Moderated distribution groups
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Yes
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Yes
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Self-service distribution groups
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Yes
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Yes (for groups not synchronized from on-premises
Active Directory)
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Global Address List
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Yes
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Yes
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Hide users from Global Address List
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Yes
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Yes
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Custom address lists
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Yes
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No
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Hierarchical address lists
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Yes
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No
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Global Address List segmentation
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Yes
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No
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Offline Address Book
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Yes
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Yes
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External contacts (in Global Address List)
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Yes
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Yes
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CALENDAR
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Out-of-office auto-replies
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Yes
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Yes
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Cross-premises calendar free/busy (mix of
on-premises/cloud users)
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Not applicable
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Yes
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Federated calendar sharing
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Yes
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Yes
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Publish or subscribe to calendar thorugh iCal
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Yes
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Yes
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Side-by-side calendar view in web client
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Yes
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Yes
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Resource mailboxes (for example, for conference
rooms or equipment)
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Yes
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Yes
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Outlook 2010 Room Finder
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Yes
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Yes
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UNIFIED MESSAGING, FAX
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Interoperability with on-premises voicemail systems
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Yes
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Via SMTP
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Exchange Unified Messaging (hosted voicemail)
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Yes
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Yes
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SECURITY
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Anti-spam (AS)
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Customer chooses AV/AS solution
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Forefront Online Protection for Exchange
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Antivirus (AV)
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Customer chooses AV/AS solution
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Forefront Protection for Exchange
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Safe and blocked senders (configurable at the
organization level)
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Yes
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Yes
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Opportunistic TLS for inbound/outbound email
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Yes
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Yes
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Forced TLS for inbound/outbound email
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Yes
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Yes
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S/MIME
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Yes
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Yes, with limitations
No Outlook Web App support
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PGP
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Yes
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Yes
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COMPLIANCE/ARCHIVING
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Disclaimers
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Yes
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Yes
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Transport rules
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Yes
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Yes
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Personal archive
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Yes
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Yes
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Retention policies
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Yes
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Yes: Exchange 2010 retention policies
No: Exchange 2007-style managed folders
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Journal messages to external or on-premises archive
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Yes
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Yes
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Multi-mailbox search (e-discovery)
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Yes
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Yes
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Legal hold
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Yes
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Yes
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Rolling legal hold (single item recovery)
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Yes
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Yes
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ADMINISTRATION
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Administration through a Web-based interface
(Exchange Control Panel)
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Yes
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Yes
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Forefront Online Protection for Exchange
Administration Center access
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Optional
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Yes
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Administration through command line shell
(PowerShell)
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Yes
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Yes
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Role-Based Access Controls (RBAC)
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Yes
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Yes
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Message tracking
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Yes
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Yes
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Usage reporting
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Some data can be extracted using PowerShell
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Some data can be extracted using PowerShell
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Auditing
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Yes
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Yes
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APPLICATION ACCESS/CUSTOMIZATION
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Application connectivity through web services
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Yes
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Yes
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SMTP relay
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Yes
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Yes
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Outlook Web App Web Parts
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Yes
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Yes
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Outlook add-ins and Outlook MAPI
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Yes
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Yes
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Application connectivity through Exchange Server
MAPI/CDO API
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Yes
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No
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Application connectivity through DAV
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No
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No
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OTHER
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Public folders
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Yes
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No
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Global Address List synchronization from on-premises
directory (Active Directory)
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Not applicable
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Yes—one-way through the Directory Synchronization
tool
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Global Address List synchronization from multiple
on-premises Active Directory forests
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Yes
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No
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