
On an Exchange server, you can configure the following registry data: The Max Extended Rule Size registry value doesn't apply to Exchange Server 2013 and later versions. The Max Extended Rule Size registry value is incorrectly configured on the Exchange server. If you have a large number of entries in these lists (cumulatively), you may receive one of these error messages when you try to add more items to the lists. You have a large number of entries in your Safe Senders, Blocked Senders, and Safe Recipients lists.īy default, you have a cumulative limit of 510 KB for all your Junk E-mail lists. By default, this limit is 510 kilobytes (KB).Ĭonsidering this limit, there are four known causes of these errors:

Microsoft Exchange limits the space that's allotted to your various Junk E-mail lists. The Junk E-mail Filter on the server will be disabled until your Junk E-mail Lists have been reduced to the size allowed by the server. Unable to add to the server Junk E-mail Lists, you are over the size allowed on the server.

Would you like to manage your Junk E-mail Lists now? When you start Microsoft Outlook or when you try to configure your junk email settings, you may receive one of the following error messages:Ĭannot add to the server Junk E-mail Lists, you are over the size allowed on the server.
