After you install Microsoft Exchange Server 2010 Service Pack 1 (SP1), you may find the following symptoms:
A user cannot add an accepted domain to the junk email blocked list or the junk email safe list.
Entries are absent from the junk email blocked list or the junk email safe list when a user logs on to a mailbox by using Outlook Web App (OWA) or Microsoft Office Outlook.
You run the Get-MailboxJunkEmailConfiguration command for a mailbox. Then, you check the TrustedSendersAndDomains or BlockedSendersAndDomains property in the Exchange Server 2010 SP1 version of the Exchange Management Shell (EMS). In this situation, you notice that entries are absent from the junk email lists.
Note You can run the Get-MailboxJunkEmailConfiguration command in the Exchange Server 2010 RTM version of the EMS to successfully retrieve the junk email lists of the mailbox.
Cause 1: This issue occurs because of a functionality change that is introduced in Exchange Server 2010 SP1. In Exchange Server 2010 SP1, domains that are configured as accepted domains are no longer allowed in the junk email lists of a mailbox.
These issues occur because Exchange Server 2010 SP1 no longer allows accepted domains to be configured in the junk email lists of a mailbox. If you try to retrieve a junk email list that contains an accepted domain, the Exchange Server 2010 SP1 server will stop processing entries in the junk email list after it detects the accepted domain. The Exchange Server 2010 SP1 server only returns what was processed before the accepted domain.
Note if you try to change a junk email list that contains an accepted domain after Exchange Server 2010 SP1 is installed on the server, the list will be lost permanently.
To resolve the issues that are described in "Symptom 2", install the following update rollup:
2529939 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
To work around the issue that you cannot add an accepted domain to the junk email lists of a mailbox, use one of the following options:
If email messages from a server must be trusted, you can add the IP address of the server to the IP allow list on the Exchange Server 2010 SP1 server.
If email messages from a server must be trusted, you can configure the server to authenticate with the Exchange Server 2010 SP1 server.
For more information about accepted domains, visit the following Microsoft website: