I have 3 IMAP accounts and a couple of POP3s set up in Outlook 2013, and for the last week I've been receiving frequent messages saying:
"Your IMAP server wants to alert you to the following: Your account is temporarily blocked for IMAP use. This may happen if you exceed the maximum number of simultaneous IMAP connections allowed. Kindly try after some time."
It has been fine for the last 9 months or so. Any ideas?