30472 Views 2 Replies Latest reply: Nov 21, 2008 7:18 PM by Evil Medieval
This can happen if you run short of temporary free space for Mail to use for its housekeeping tasks, or with a laptop if those tasks are not allowed to be completed before shutdown, or forced sleep. How much free space do you have on your hard drive, or if partitioned, on the boot partition?
The preference file gets corrupted or overwritten, and the account info that is entered/found at Mail Preferences/Accounts/Account Information (and under the Mailbox Behaviors and Advanced tabs) is lost -- OSX and Mail will not overwrite the actual message data. Check for the Mail folder at Home/Library/Mail and make a duplicate and drag the resulting copy to the Desktop for temporary backup.
Set the accounts back up in Mail Preferences, after being sure to DECLINE when prompted to import anything. Mail should than rediscover the existing account folders.
The MobileMe account is there because that info also resides at System Preferences/MobileMe, in addition to the Preferences.