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Duplicate read receipts are sent when you use a POP3 client or an IMAP4 client in an Exchange Server 2007 environment

Article ID: 2294143 - View products that this article applies to.

SYMPTOMS

Consider the following scenario:

You log on to a Microsoft Exchange Server 2007 mailbox by using a Post Office Protocol 3 (POP3) client or an Internet Message Access Protocol (IMAP) client.
An email message is downloaded for which the sender has requested a read receipt.

In this scenario, a read receipt is sent to the sender before you open the email message. Additionally, when you open the email message, another read receipt is sent to the sender.

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RESOLUTION

To resolve this issue, follow these steps:

Install the following update rollup:
2530488
(http://support.microsoft.com/kb/2530488/ )
Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3
Enable the fix. To do this, follow these steps:
1. Enable the change for POP3. To do this, follow these steps:
  1. Run the following cmdlet in Exchange Management Shell:
    set-PopSettings -SuppressReadReceipt $true
  2. In the Services console, restart the POP3 service.
2. Enable the change for IMAP4. To do this, follow these steps:
  1. Run the following cmdlet in Exchange Management Shell:
    set-ImapSettings -SuppressReadReceipt $true
  2. In the Services console, restart the IMAP4 service.