671:) from its previous version. New features included password reset which allowed users to reset a forgotten PIN lock code, message flagging which gave users the ability to mark a message so they could remember to follow up on it when they got back to their computer, Out of Office setting so users could set an “away” message from their phone, SharePoint (and UNC file share) access from links in email (file traffic was proxied though EAS), Empty deleted items to allow people to shrink their mailboxes so they didn’t exceed their mailbox size limits, fetch which allowed users to get only parts of a message and then choose later to get the rest of the message (or an attachment) later, device info which allowed users and administrators to see which phones were connected to their accounts, and AutoDiscover which (although strictly speaking isn’t part of the EAS protocol) allowed phones to automatically configure the EAS connection with just a user login and password (instead of requiring people to know the computer name of their Exchange Server). The ability to see who was invited to a meeting was also added as well as the ability to search the server for an email that was not synced to the device. The new policies introduced were:
849:(images stored in an Active Directory server of the user who has sent the email), Message Diffs (a means of sending only the new portion of an email and avoiding redundant information), added device/user information to the provision command so that the new Allow/Block/Quarantine feature could more easily allow administrators to control which devices connected to their organizations, and
713:
the client at all times so battery life and data wouldn’t be consumed constantly turning on the radio and querying the server and was a “true push sync” solution (which had far lower message delivery latencies, as opposed to the previous ping based “push to pull” solution), a confirmation of a completed remote wipe, as well as the following 30 new policies:
632:(GAL) search was added to enable people to look up other co-workers in their company directory to find their email address. The ability to remotely wipe a device was also added so administrators could remove company data from a device that was lost, stolen, or after an employee left the company. Tasks syncing was added as was
589:) to Exchange 2000 servers syncing Email, contacts, and calendar and allowed users to select a folder list to sync but this was only for email folders (not contacts or calendars). This initial version of EAS has the user’s device “pull” data down rather than have the server “push” new information as soon as it was available.
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encoding of a binary structure) to decrease the amount of data sent wirelessly, Multiple collections sync (a bundling of all sync requests together instead of the previous way of doing a sync for each folder separately), a hanging sync which allowed the server to keep a communications channel open to
601:
2003. This version of the protocol was developed by the
Microsoft Windows Mobile team and was delivered as a binary drop (massync.dll) to the Exchange Server team. EAS used WebDAV to connect to a user's mailbox and added the ability to sync non-default calendar and contacts folders. Always Up To
913:
In April 2011, Microsoft launched the EAS logo program, which tests third-party EAS clients in mobile email devices. Handset manufacturers that have licensed the EAS protocol from
Microsoft are eligible to join the program. In order to be compliant, EAS clients must employ EAS v14.0 or later and
627:
EAS 2.5 (Part of
Exchange Server 2003 SP2) was the first version of EAS to be written by the Exchange Server team. This version also introduced Direct Push, a real-time push e-mail solution which allows the server to say "I have a new item for you" and then tells the client device to do a sync.
888:
In
December 2008 Microsoft shifted its licensing of EAS from that of a protocol license, to licensing the patents of EAS and providing full protocol documentation. Because EAS is licensed as a series of patents (and not given as computer code to other companies), different clients and servers
884:
Beginning in the early 2000s, EAS began to be available for licensing. At the time it was a client only protocol license. Motorola was the first licensee and began with a license of the 2.1 version of EAS. Various other organizations licensed EAS over time and
Microsoft eventually started
614:
In
Exchange Server 2003 SP1 ghosting support was added to EAS 2.1. Ghosting tells server what they can sync and then all is sent down but when changes are sent up, only specified fields are changed (others are not deleted). The EAS protocol also moved from a Globally Unique Identifier
822:(OWA) and EAS, the ability to set a server side rule to always move messages in a conversation, lunar calendar support, syncing of the reply state (which let the device and the server know if any message had been forwarded or replied to from any other source), a new way to identify
826:(UM) messages so that voicemail that appeared in a user’s inbox could be handled differently, SMS Syncing (which allowed users to see their SMS messages in their email inbox and reply to them from their inbox instead of on their phone), and the following two new policies:
606:) was the technology used to deliver this information to the device. Because of the use of SMS as a notification, the configuration of an SMS gateway was required and each account needed to be configured with a user's mobile phone number.
864:
This new protocol version adds mainly 3 enhancements: Redesigned calendar synchronisation to avoid the most common EAS calendar syncing problems, added calendar attachments and syncing the email drafts folder.
817:
and the email subject, notes syncing, the ability to look up the availability (free/busy status) of a contact (from their calendar), a
Nickname Cache which shared the names of common used contacts between
837:
This is also the first version of EAS that identified clients that were using older versions of EAS and alerted them if there was an updated version of the client that would enable newer features.
585:
The first version of EAS (called AirSync at the time) was a part of Mobile
Information Server (MIS) 2002. This version of EAS communicated over Web-based Distributed Authoring and Versioning (
1013:
889:
implement a subset of the entire features of the protocol and the implementations are written by each company that has obtained a license. Google uses an implementation of EAS for its
813:
EAS 14.0 was introduced as part of
Exchange Server 2010. This new version added a new conversation view that put email messages in a view connected by several attributes including a
375:
853:(IRM) over EAS (a method to apply digital rights management control and encryption to email messages that are sent and received). EAS 14.1 may allow IRM over EAS.
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EAS 12.1 came in
Exchange Server 2007 SP1. This version of the protocol was one of the largest changes since version 2.5 and featured header compression (
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This version of the protocol contains three major capabilities: improved keyword search, propose new time and account-only remote wipe.
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installations of Exchange, the various personal and enterprise hosted services from Microsoft also utilize EAS, including
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Date (AUTD) was implemented as a way to let a device know if there was new information for it and Short Message Service (
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EAS 16.1 was announced in June 2016 and was deployed in Office 365 first, followed by Exchange Server 2016.
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EAS 16.0 was announced in June 2015 and was deployed in Office 365 first, followed by Exchange Server 2016.
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619:) to 1:X short IDs for all items which reduced the amount of data sent across the wireless network.
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licensing the server side of EAS in 2007. The protocol licensing continued until 2008.
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EAS 14.1 came as part of Exchange Server 2010 SP1. This version of the protocol added
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devices, Microsoft now licenses the technology widely for synchronization between
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1014:"Android support for Microsoft Exchange in pure Google devices"
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Allow-Block-Quarantine strings for device type and device model
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and Novell Data Synchronizer Mobility Pack, respectively.
1258:"Microsoft Expands Exchange ActiveSync Licensing Program"
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email encryption and the following policies were added:
403:, contacts, calendar, tasks, and notes from a messaging
914:
enable the following features and management policies:
1043:. Computerworld (2008-03-06). Retrieved on 2013-10-23.
1134:"Understanding Exchange ActiveSync Mailbox Policies"
1001:
Google Extends Exchange ActiveSync Support for Gmail
901:) to support smartphones and other devices, through
1092:"New Mobility Features in Exchange Server 2003 SP2"
1041:Apple adds Exchange support to iPhone, unveils SDK
443:Originally branded as AirSync and only supporting
1339:"Exchange ActiveSync: Frequently Asked Questions"
1055:. Windows.microsoft.com. Retrieved on 2013-10-23.
1065:
1063:
1061:
789:Configure message formats (HTML or plain text)
1420:"Exchange ActiveSync Client Comparison Table"
1180:"Announcing Exchange ActiveSync version 16.1"
921:Accept, decline and tentative accept meetings
369:
8:
1279:"Exchange ActiveSync protocol documentation"
1231:"Microsoft and Xandros Expand Collaboration"
777:Allow S/MIME encrypted algorithm negotiation
556:Apart from the above, EAS client support is
1480:"Exchange Server Interoperability Guidance"
1003:. Brighthand.com. Retrieved on 2013-10-23.
376:
362:
25:
1440:"New to Exchange ActiveSync Development?"
1053:Mail app for Windows - Microsoft Windows
918:Direct Push email, contacts and calendar
1380:"Mobile Email with Exchange ActiveSync"
1071:"Exchange ActiveSync and Exchange 2003"
993:
317:
250:
200:
35:
28:
801:Include past calendar items (duration)
506:, EAS client support is included on:
427:. The mobile device communicates over
545:. The built-in email application for
466:GroupWise Mobility Services software,
7:
1460:"Exchange Server Protocol Documents"
1343:Microsoft Exchange Server TechCenter
1155:"Announcing Exchange ActiveSync v16"
786:Minimum number of complex characters
399:designed for the synchronization of
792:Include past email items (duration)
1306:"Exchange ActiveSync logo program"
774:Require encrypted S/MIME algorithm
738:Allow internet sharing from device
14:
1113:"Overview of Exchange ActiveSync"
768:Require encrypted S/MIME messages
741:Allow desktop sharing from device
628:(This was called a "Ping Sync").
804:Require manual sync when roaming
798:HTML email body truncation size
771:Require signed S/MIME algorithm
1400:"Exchange ActiveSync Overview"
1205:"Exchange ActiveSync Protocol"
765:Require signed S/MIME messages
658:Allow non-provisionable device
553:, also supports the protocol.
1:
1345:. Microsoft Corporation. 2012
1184:Outlook and Exchange dev blog
851:information rights management
649:Require alphanumeric password
415:. The protocol also provides
1484:Exchange Server - Dev Center
1021:static.googleusercontent.com
927:Reply/forward state on email
1510:Application layer protocols
1366:. Microsoft. 5 October 2012
1209:Legal and Corporate Affairs
924:Rich formatted email (HTML)
753:Allow unsigned applications
423:. The protocol is based on
1541:
948:Timeout without user input
795:Email body truncation size
726:Disable SMS text messaging
717:Disable desktop ActiveSync
687:Password expiration (Days)
643:Timeout without user input
502:In addition to support on
445:Microsoft Exchange Servers
18:
1384:Microsoft Exchange portal
951:Number of failed attempts
720:Disable removable storage
696:Windows SharePoint access
693:Windows file share access
675:Allow attachment download
652:Number of failed attempts
744:Disable POP3/IMAP4 email
690:Enforce password history
681:Enable password recovery
498:subscriptions from 2013.
417:mobile device management
19:Not to be confused with
1515:Internet mail protocols
945:Minimum password length
830:Allow Mobile OTA Update
678:Maximum attachment size
655:Policy refresh interval
640:Minimum password length
30:Internet protocol suite
833:Mobile OTA Update Mode
780:Allow S/MIME SoftCerts
762:Application block list
759:Application allow list
567:, in the native Apple
1358:"Exchange ActiveSync"
684:Allow simple password
747:Allow consumer email
699:Encrypt storage card
525:smartphones and the
496:Google Apps for Work
486:MDaemon Email Server
397:proprietary protocol
16:Proprietary protocol
756:Allow unsigned CABs
630:Global Address List
597:EAS 2.0 shipped in
527:BlackBerry PlayBook
391:(commonly known as
389:Exchange ActiveSync
1464:MSDN Documentation
903:IBM Notes Traveler
474:IBM Notes Traveler
1363:Microsoft TechNet
1311:Microsoft TechNet
1159:Exchange dev blog
942:Password required
824:unified messaging
783:Device encryption
750:Allow web browser
732:Disable Bluetooth
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1488:. Retrieved
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1424:TechNet Wiki
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1174:
1162:. Retrieved
1158:
1149:
1137:. Retrieved
1128:
1116:. Retrieved
1107:
1095:. Retrieved
1086:
1074:. Retrieved
1048:
1036:
1024:. Retrieved
1020:
1008:
996:
933:Autodiscover
912:
909:Logo program
895:Lotus Domino
887:
883:
875:
872:
863:
860:
844:
836:
812:
735:Disable IrDA
707:
669:managed code
666:
626:
613:
596:
584:
557:
555:
550:
532:
501:
442:
392:
388:
387:
348:
308:
241:
191:
1490:28 November
1486:. Microsoft
1470:28 November
1466:. Microsoft
1450:28 November
1446:. Microsoft
1430:19 November
1426:. Microsoft
1410:19 November
1406:. Microsoft
1390:19 November
1386:. Microsoft
1370:19 November
1318:19 November
1314:. Microsoft
1290:19 November
1215:19 November
1211:. Microsoft
939:Remote wipe
539:Outlook.com
535:on premises
470:Lotus Notes
1504:Categories
1349:2012-11-23
988:References
930:GAL lookup
847:GAL photos
815:Message-ID
543:Office 365
409:smartphone
319:Link layer
21:ActiveSync
1444:MSDN Blog
1236:Microsoft
972:Push-IMAP
880:Licensing
549:desktop,
547:Windows 8
462:with the
460:GroupWise
453:groupware
449:Pocket PC
411:or other
1263:July 19,
1189:March 1,
1164:March 1,
1026:July 11,
962:MAPI/RPC
956:See also
551:Mail app
494:in paid
480:Mailsite
1242:July 7,
1139:July 7,
1118:July 7,
1097:July 7,
1076:July 7,
982:CardDAV
891:G Suite
576:History
533:Beyond
511:Android
395:) is a
349:more...
333:Tunnels
309:more...
242:more...
192:more...
181:TLS/SSL
136:ONC/RPC
73: (
977:CalDAV
967:SyncML
710:Base64
634:S/MIME
587:WebDAV
492:Google
464:Novell
405:server
176:Telnet
75:HTTP/3
1017:(PDF)
565:macOS
472:with
439:Usage
433:HTTPS
407:to a
401:email
303:IPsec
81:HTTPS
1492:2012
1472:2012
1452:2012
1432:2012
1412:2012
1392:2012
1372:2012
1320:2012
1292:2012
1284:MSDN
1265:2015
1244:2010
1217:2012
1191:2022
1166:2022
1141:2010
1120:2010
1099:2010
1078:2010
1028:2017
897:and
869:16.1
857:16.0
841:14.1
809:14.0
704:12.1
663:12.0
617:GUID
571:app.
569:Mail
541:and
447:and
429:HTTP
419:and
298:IGMP
278:ICMP
236:QUIC
231:RSVP
226:SCTP
221:DCCP
186:XMPP
166:SNMP
161:SMTP
146:RTSP
121:OSPF
111:NNTP
106:MQTT
101:MGCP
96:LDAP
86:IMAP
71:HTTP
51:DHCP
623:2.5
610:2.1
604:SMS
593:2.0
581:1.0
558:not
517:iOS
431:or
425:XML
393:EAS
343:MAC
338:PPP
328:ARP
293:ECN
288:NDP
216:UDP
211:TCP
171:SSH
156:SIP
151:RIP
141:RTP
131:PTP
126:POP
116:NTP
91:IRC
66:FTP
61:DNS
46:BGP
1506::
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1442:.
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1402:.
1382:.
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1341:.
1308:.
1281:.
1233:.
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1182:.
1157:.
1060:^
1019:.
435:.
282:v6
271:v6
266:v4
261:IP
55:v6
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