I cannot edit my incoming mail server name under iCloud
This morning my iCloud email stopped working. When I open the Mail preferences panel and look at the iCloud account, the Incoming Mail Server is listed as "mail.example.com" and is greyed out. I cannot edit this entry to the proper iCloud server name. I can edit my user name and password, but when I try to save changes it tells me that I cannot leave the Incoming Mail Server name blank. Which wouldn't be a problem if I could, you know, change it.
This just started this morning. I noticed that Mail was asking me for passwords that have been in my Keychain for ages, and I had to manually enter them all to get to my email.
My account is working on my iOS devices.
Tom
iMac, Mac OS X (10.7.4)