Managing POP3 and IMAP4

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Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.

 

Applies to: Exchange Server 2007, Exchange Server 2007 SP1, Exchange Server 2007 SP2, Exchange Server 2007 SP3

If you have to administer Post Office Protocol version 3 (POP3) and Internet Message Access Protocol 4rev1 (IMAP4) in the original release (RTM) version of Microsoft Exchange Server 2007, you will perform all your administrative tasks in the Exchange Management Shell. In Exchange 2007 Service Pack 1 (SP1), you can now manage POP3 and IMAP4 settings by using the Exchange Management Console.

Note

For more information about how to manage POP3 and IMAP4 settings by using the Exchange Management Console, see the topics in this section.

Managing POP3 and IMAP4 by Using the Exchange Management Shell

The Exchange Management Shell gives you a powerful command-line interface for administering Exchange 2007. You can use the Exchange Management Shell to manage the POP3 and IMAP4 services and your POP3 and IMAP4 users.

Managing POP3 and IMAP4 on a Client Access Server

The Exchange Management Shell enables you to modify and view the POP3 and IMAP4 settings by using the cmdlets described in the following table.

Cmdlets for managing POP3 and IMAP4 on a Client Access server

Cmdlet name Description

Set-PopSettings

This cmdlet lets you modify all available settings for POP3 on a Client Access server.

Set-ImapSettings

This cmdlet lets you modify all available settings for IMAP4 on a Client Access server.

Managing POP3 and IMAP4 Settings on a Per-User Basis

You can use the Set-CASMailbox cmdlet in the Exchange Management Shell to manage POP3 and IMAP4 settings for individual users by modifying properties on their mailbox. The following table describes the parameters that you can use with the Set-CASMailbox cmdlet.

Parameters to use with the Set-CASMailbox to manage POP3 and IMAP4

Parameter name Description

ImapEnabled

This parameter specifies whether the IMAP4 protocol is enabled for this mailbox.

ImapMessagesRetrievalMimeFormat

This parameter specifies the format of messages that are retrieved from the server.

ImapUseProtocolDefaults

This parameter specifies whether to use the default protocol settings that are specified on the Client Access server for the IMAP4 protocol.

PopEnabled

This parameter specifies whether the POP3 protocol is enabled for a mailbox.

PopMessagesRetrievalMimeFormat

This parameter specifies the format of messages that are retrieved from the server.

PopUseProtocolDefaults

This parameter specifies whether to use the default protocol settings that are specified on the Client Access server for the POP3 protocol.

For more information about how to use the Set-CASMailbox cmdlet to manage POP3 and IMAP4 settings for a user, see Set-CASMailbox.

Managing POP3 and IMAP4 with Earlier Versions of Microsoft Exchange

When you deploy Client Access servers to support clients that use POP3 and IMAP4 and their mailboxes are located on Exchange Server 2003 back-end servers, you must use Basic authentication, and you will be unable to use Secure Sockets Layer (SSL) encryption. Instead, you must use Internet Protocol Security (IPsec) to help secure the communication between these servers.

Using Non-Standard Accounts with POP3 and IMAP4

You cannot use the Anonymous account or Guest account to log on to an Exchange 2007 mailbox through POP3 or IMAP4. This kind of access is blocked because of security vulnerabilities when you use non-standard accounts for POP3 and IMAP4 access. Additionally, you cannot connect to the Administrator mailbox through POP3 or IMAP4. This behavior is by design in Exchange 2007 to enhance security for the Administrator mailbox. To access the Administrator mailbox, you must use Microsoft Office Outlook or Outlook Web Access. For more information, see Administrator Cannot Connect to the Administrator Mailbox Using POP3 or IMAP4.

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