A new client side feature which Microsoft has released in Exchange 2010 SP1 is the ability of Outlook 2010 to automatically map all mailboxes to which the logged in user has full access. There by, on each mailbox that you have been granted Full Access, you will see it on your own personal mailbox. In Order to disable automatic mapping: Go to this user mailbox, right click on it and choose manage full mailbox access, then just remove your user from the full mailbox access page You can use Read more

Message header can provide us with valuable information that will allow better troubleshooting of mail flow problems To view message header in Outlook 2010 Open message you want to inspect Click on the small square expansion button of the message navigation screen. You will receive message properties with internet mail headers Read more

Every time you open Outlook 2007 you are prompted to enter your domain credentials ,even though you know you have saved it? To solve it try that one: Open the following path: In Vista C:UsersYourUserNameAppDataRoamingMicrosoft Once open you will see numerous folders including a "protect" folder. Delete the "protect" folder When you have deleted the protect folder, restart Outlook. You will be requested to enter your password again, but it will be the last time. If problem exist When working RPC over Read more

It is a common task in corporate environment You need to open a user with new meeting room name Open new user's mailbox Go to tools> Options >Calendar options>Resource schedule Mark the sections bellow That is . NOTE: In Exchange 2007 there is ability to create resources (Not Users) You can also set the resource capacity now! Eg: in one of your meeting room, only be able to fit 10 people, you can type in resource information, under the property of the object. Read more

Show received meetings as tentative: Meetings are automatically placed on the calendar as tentative, so that timeslots will not be overbooked. As meeting updates come in, prior updates are marked "out of date" and are automatically deleted. This means that meeting updates are not accepted in an out of order fashion keeping your calendar items current." You can stop/start the automatic addition of a tentative meeting when meeting request e-mail is received in Outlook by clearing/marking the check Read more

On errors: Mapi session "/o=COMPANY/ou=Europe/cn=Recipients/cn=User1? exceeded the maximum of 32 objects of type "session". Task "Microsoft Exchange Server" reported error (0×80040115): "The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action." Task ‘Microsoft Exchange Server' reported error (0×8004011d): ‘The server is not available. Contact your administrator if this condition persists.' Don't waste your time on profile Read more

Outlook doesn’t open EML attachment or EML files saved on desktop.
The solution is simple..
Uninstall Google Desktop Search