Exchange 2010 – Read Receipt Problem with POP3/IMAP4
📌 Problem:
In Microsoft Exchange 2010, senders may receive a read receipt even when the recipient has not actually read the email. This issue occurs when the recipient is accessing their mailbox using POP3 or IMAP4 protocols.
✅ Solution:
Exchange 2010 includes the parameter SuppressReadReceipt, which allows administrators to control this behavior. Setting this parameter to $true prevents automatic read receipts from being sent.
✔ Apply Globally (for all users):
Set-PopSettings -SuppressReadReceipt $true
Set-ImapSettings -SuppressReadReceipt $true✔ Apply to a Single User:
Set-CasMailbox -Identity "username" -PopSuppressReadReceipt $true
Set-CasMailbox -Identity "username" -ImapSuppressReadReceipt $true🔄 After applying the commands, restart the following services:
- MSExchange Transport Service
- MSExchange System Attendant Service
- MSExchange POP Service
- MSExchange IMAP Service
