Greetings,

I use mutt on Ubuntu to access my IMAP mailboxes, on my Centos email server that runs dovecot. Everything has worked without problems for years. About one week ago, the connection between mutt and dovecot became unstable.

Before, I could leave mutt connected for days in a row, no problem. Now, everything still works fine, except... I get every ten minutes I get "connection timed out" in Mutt's status line, and hundreds of messages like

Apr 12 16:12:49 SERVERNAME dovecot: imap(ACCOUNTNAME): Logged out in=164 out=757

what puzzles me is that I did not touch anything both on my server and on my desktop, except an "apt-get update" some days before this started.

But cannot see how it would be related anyway, nor have I found anything online like this.

Any help to understand what happened and fix it is very welcome.

Marco