Title: Dovecot: folder appears empty
       Author: Solène
       Date: 23 January 2017
       Tags: email
       Description: 
       
       Today I encountered an unknown issue to me with my Imap server
       dovecot. In roundcube mail web client, my Inbox folder appeared empty
       after being reading a mail. My Android mail client K9-Mail was
       displaying "IOException:readStringUnti...." when trying to synchronize
       this folder.
       
       I solved it easily by connecting to my server with SSH, cd-ing into
       the maildir directory and in the Inbox folder, renamed
       **dovecot.index.log** to **dovecot.index.log.bak** (you can remove it
       if it fix the problem).
       
       And now, mails are back. This is the very first time I have a problem
       of this kind with dovecot...