2013.09.23
*add default domain parameter.
增加默认域名参数 [System] DefaultDomain = test.com
*no auto-reply & auto-forward message to external when an account has not outgoing right.
如果帐号被禁止外发邮件，则不再向外发送自动回复与自动转发。
2013.09.12
*change SPF check function to default close.
SPF检查功能缺省值改为关闭避免错判邮件. [System] AntiSpamSPF = 0.
