How to Enable POP3 Service in Exchange Server 2007

In Exchange Server 2007 RTM version, POP3 feature can be enabled or disabled from the Exchange Management shell. In Exchange Server 2007 SP1, POP3 access for users can be enabled or disabled from the Exchange Management Console.

How to stop and start POP3 service from Microsoft Management Console

1.  Open the Services console from Start > Programs > Administrative Tools.

2.  Right-click on Microsoft Exchange POP3 in the result pane and then click Start.

3. To stop the POP3 service, right-click on Microsoft Exchange POP3 and then click Stop.

How to stop and start POP3 service from the command prompt

1.  Open the command prompt.

2.  Run below commands to start or stop the POP3 service:-

To start the POP3 service- 

net start MSExchangePOP3

To stop the POP3 service-

                net stop MSExchangePOP3

How to verify the POP3 service is running

1.  Open the command prompt on the Exchange Server having Client Access server role installed.

        2. Type telnet localhost 110 at the command prompt, and then press ENTER.

If POP3 service is working correctly, it will return the message as "+OK Microsoft Exchange 2007 POP3 server ready".

How to Enable POP3 in Exchange 2007

Set-service msExchangePOP3 -startuptype automatic

Start-service -service msExchangePOP3

How to Enable Protocol Logging for POP3

1. Open the Microsoft.Exchange.Pop3.exe.config file in Notepad which can be found at this location C:\Program Files\Microsoft\Exchange Server\ClientAccess\PopImap\ Microsoft.Exchange.Pop3.exe.config.
2. Change the following line in the <appSettings> section from:

<addkey="ProtocolLog" value="false" />

to:

<addkey="ProtocolLog" value="true" />

1. Save, and close the Microsoft.Exchange.Pop3.exe.config file.

How to Enable or Disable POP3 Access for a User

To enable or disable POP3 requires  Exchange 2007 SP1

 Exchange Management Console can be used to enable or disable POP3 access for a user

1. Open the Exchange Management Console, expand Recipient Configuration, and then click Mailbox.
2. Click the POP3 and IMAP4 tab in the work pane.
3. Select POP3 and then, click Properties.
4. On the <Mailbox Name> Properties page, on the Mailbox Features tab, click POP3.
5. Click Enable or Disable depending upon the access.
6. Click Apply, and then click OK to save your changes.

 To use the Exchange Management Shell to enable or disable POP3 access for a user

·  To enable POP3 for a user, run the following command:

Set-CASMailbox -Identity <User_E-mail_Address> -PopEnabled $true

• To disable POP3 for a user, run the following command:

Set-CASMailbox -Identity <User_E-mail_Address> -PopEnabled $false