Exchange Server 2007 Solution Center

User can't change permissions on users own calendar
User gets an error message when trying to change anything on the permissions tab of the users calendar folder from outlook 2007. The error message says that the permissions can't be saved.
How to change the Storage Group default path location in Exchange Server 2007
The default Storage Group path location in Exchange Server 2007 is X:\Program Files\Microsoft\Exchange Server\Mailbox but this value can be changed using AdsiEdit tool.
Microsoft Transporter Suite for Lotus Notes migration, Hebrew Issue
The following knowledgebase will help you to resolve migration issue from Lotus Notes to Exchange 2007

Users cannot read calendar items when they connect Exchange Server 2007 by using certain IMAP4 or POP3 clients
Fixes an issue in which users cannot read calendar items when they connect Exchange 2007 by using certain IMAP4 or POP3 clients.
The value in the "Messages queued for submission" performance counter on the mailbox role of Exchange Server 2007 increases after a meeting request is delivered
Fixes an issue that the performance counter "Messages queued for submission" is still incremented on the mailbox role of Exchange Server 2007 after a meeting request that has an invalid sender address is delivered.
The Exchange 2007 Unified Messaging server does not update the caller information if an external user makes a call
Fixes an issue in which the Exchange 2007 Unified Messaging (UM) server does not update the caller information if the Caller ID does not match the number of digits in the dial plan. Provides a resolution.

Error message when you try to access SharePoint Server from Outlook Web Access in Exchange Server 2007 "Object doesn't support this property or method"
Describes a problem that occurs when you try to access Microsoft Office SharePoint Server in OWA. May occur when Symantec Enterprise Vault OWA Extensions are installed on the server that hosts the Client Access Server role.
You may receive an "error code 8202" error message when you try to install Exchange Server 2007 Service Pack 1
Describes a problem in which you may receive an error message that contains error code 8202 when you try to install Exchange Server 2007 SP1. Provides a resolution.
Error message when you prepare an Active Directory forest for Exchange Server 2003: "Extending the schema in Active Directory failed"
Describes an issue that may occur when a third-party program that extends the Active Directory schema is installed in the domain. To work around this issue, modify the Exchange attributes to use different link identifiers.