[MlMt] IMAP errors

[Ralph Alvy]

Today I keep getting this error:

MailMate encountered the following error: “Failed to fetch data for 1 
messages.”.
Mailbox: “Sent”.
This indicates a server bug. You can tell MailMate to always ignore 
messages involved in this type of error (for this account) or you can 
temporarily ignore the messages with the following UIDs: “16600”.

I'm not sure what to do about it. It happens on my desktop Mac Mini but 
not my Macbook Pro.