Here is my complete error message:

Your IMAP command could not be sent to the server, due to non-network
errors. This could, for example, indicate a lack of memory on your system.

Configuration:

Account: Cliff-WC
Server: mail.warmncozies.com
User name:
Protocol: IMAP
Port: 143
Secure (SSL): 0
Code: 800ccc0e

I used the same configuration to set up mail on my iPhone. Any ideas?