IMAP error

Since a few days I have an problem with em-client and my two email adresses ( and
First the IMAP error startet with my gmx email adress (server not available).
I coulnt find the problem, so i deletet my both accounts from em-client and made them new.
Now I have the same problem, but with my t-online mail-account.
I can send and receiver emails on both accounts, but I always get an error message.
Someone knows a solution?

Can you try updating to the latest version available at and see if there is any difference.

I have installed latest version.