可是灰名单功能，导致首次接收延迟很大。
比如从qq的邮箱：xxxxx@qq.com  第一次发出，maillog显示我们会主动拒绝三次，qq的失败重新投递的间隔比较长，导致第一次收件时间等待太久。

想从iRedMail-0.4.1升级roundcube 0.2.1-stable.。 roundcube 还是有很多问题。

svn哪里不是做好了0.41吗：
iRedMail-0.4.1:
    * Known issue: pysieved will cause a zombie process.
    * Update clamav to 0.95.1.
    * Update roundcube and related patches to 0.2.1-stable.
    * managesieve service (pysieved) is now not a optional function.
    * Add one more object to ldap user/admin: shadowAccount.
    * Add ldap attribute to store user's backup mail address, used for
      password reset or whatever.
    * Add backup mx detect in virtual domain lookup.
    * Update phpMyAdmin to 2.11.9.5.
    * Address of mail group/list will be autocomplete while you type
      recipients in roundcube now.
    * Say goodbye to SquirrelMail.
    * Update dovecot to 1.1.13.
    * Add group mail/alias support for openldap backend.
    * Add attribute for mail list access policy control.
    * Add missing index attributes in OpenLDAP: listMember, listOwner,
      accessPolicy.
    * userPassword & accountStatus are optional for objectclass mailAdmin.
    * Fixed OpenLDAP ACL.
    * Fixed: Make awstats access via https only.
    * Say goodbye to Horde.
    * Create symbol link for all web-based programs, so that we don't have
      to restart apache while upgrade them.
    * Fix file permission: /etc/pysieved.ini, should be owned by vmail:vmail.
    * Add max length limit for several ldap attributes, remove unnecessary
      attribute.
    * Adjust mail_location setting in dovecot.
    * Replace 'gn' by 'givenName' in roundcube global ldap address book.
      Thanks shake.chen@gmail.
    * Add script for mysql database backup: tools/backup_MySQL.sh.

是的，开发中。