--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-42833109-F8C2-57FC-9995-0461698A19FF.dita	Wed Mar 31 11:11:55 2010 +0100
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-42833109-F8C2-57FC-9995-0461698A19FF" xml:lang="en"><title>IMAP4
+Concepts</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>This section describes the Internet Message Access Protocol (IMAP4) and
+its implementation on the Symbian platform. </p>
+<section id="GUID-DBF1C87D-7360-54B7-8658-B6659BF77F06-GENID-1-8-1-16-1-1-6-1-5-1-4-1-2-2"><title>IMAP4 protocol</title> <p>IMAP4
+is one of the most common Internet standard protocols for retrieving emails.
+It is an application layer Internet protocol operating on port 143 that allows
+a local client to access email on a remote server. </p> <p>The current version,
+IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501. Eariler, IMAP4
+was called Internet Mail Access Protocol, Interactive Mail Access Protocol
+(RFC 1064), and Interim Mail Access Protocol. </p> <p>The default port for
+IMAP4 to download messages is 143, but if a client establishes a secure connection
+(over SSL or TLS) for IMAP4 to download message, the port is 993. </p> <p>Most
+email clients support either POP3 or IMAP to retrieve messages; however, few
+Internet Service Providers (ISPs) support IMAP. IMAP4 supports access to the
+mail store in both modes of operation—connected (online) and disconnected
+(offline). </p> <p>Emails are generally sent to an email server that stores
+received messages in the recipient's email mailbox. The user later retrieves
+these messages with either a web browser or an email client that uses one
+of a number of email retrieval protocols. </p> <p>Email clients using IMAP4
+generally stores messages on the server until the user explicitly deletes
+them. This allows multiple clients to access the same mailbox. However, the
+client may store local copies of the messages, but these are considered to
+be a temporary cache; the server's store is authoritative. </p> </section>
+<section id="GUID-6162DB96-ED81-4AA4-B737-8298DC0A94D1"><title>Symbian platform implementation of IMAP4</title> <p>The Messaging
+Application module has implemented all the functionality of standard IMAP4
+and conforms to RFC3501. </p> </section>
+<section id="GUID-572840C2-0ECC-4925-A42D-093E0043E07F"><title>IMAP4 example</title> <p>For more details on implementing
+the IMAP4 MTM functions, see <xref href="GUID-D73AD200-BE4D-50BF-BCF9-14627DE530B7.dita">example
+code</xref>. </p> </section>
+</conbody><related-links>
+<link href="GUID-1F755804-70D6-5635-B2F7-06F03C8D4B74.dita"><linktext>IMAP4 MTM</linktext>
+</link>
+</related-links></concept>
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