問題解決

1. 問題一：開啟插件 fetchmail 時 /var/log/roundcubemail/error.log 出現錯誤訊息。

   [07-Jun-2016 11:49:36 +0800]: <6p6bhr1o> Warning: Call to deprecated 
   function rep_specialchars_output(); See bc.inc for replacement
   

2. 問題一解決：roundcubemail 1.2 版的 bc.php 以 1.1.5 版的 bc.php。

    1009  wget https://github.com/roundcube/roundcubemail/releases/download/1.1.5/roundcubemail-1.1.5.tar.gz
    1011  tar zxvf roundcubemail-1.1.5.tar.gz 
    1012  find roundcubemail-1.1.5 -name bc.php
    1013  cd /usr/share/roundcubemail/
    1014  mv program/include/bc.php program/include/bc.php.orig 
    1015  cp /usr/src/roundcubemail-1.1.5/program/include/bc.php program/include/
    1016  cd program/include/
    1017  diff -uN bc.php.orig bc.php
    1018  tail /var/log/roundcubemail/errors.log