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<HEAD><TITLE>FAQ汇萃 >> solaris 专栏 >> 钱飞老师的solaris技术问答（1）-sendmail命令的&quot;-f&quot;选项</title>
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<a href=http://www.jsp001.com/list_thread.php?int_attribute=1>FAQ汇萃</a>
>> <a href=http://www.jsp001.com/list_thread.php?forumid=39&int_attribute=1>solaris 专栏</a>
>> 钱飞老师的solaris技术问答（1）-sendmail命令的&quot;-f&quot;选项 [<a href=http://www.jsp001.com/forum/showthread.php?goto=newpost&threadid=627>查看别人的评论</a>]<br>

<hr><p>由 fei 发布于: 2001-03-06 13:50</p><p> </p><p>问: /usr/lib/sendmail命令具有一个"-f"选项, 据联机手册所述, 只有"trusted user"才可以使用.这个选项到底是干什么用的? <br><br>答: 只有在/etc/sendmail.cf文件中定义了的用户(省缺定义为root,daemon,UUCP) 才可以用"-f"选项,在发信时动态指定发送者地址(From行).指定方法为: <br><br>sendmail -f NAME <br><br>一般用户指定该选项亦无效.请事先确认/etc/sendmail.cf文件.<br>% cat /etc/sendmail.cf<br>...<br>### Trusted users<br>T root daemon uucp<br>...<br>如有必要,请在该行上添加相应的用户名.考虑到系统的安全, 建议您最好不要 乱用这项功能. <br><br>(钱飞/fei@come.or.jp)<br></p></td>
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