getmail的root限止问题，怎么解决？？

sparrowjun

在root下运行getmail,出现以下问题，我看了faq,这么说的：

getmail complains about "Delivery error (refuse to deliver to commands as root)". What's wrong?

You're running getmail as user "root" (UID 0) and trying to have getmail run an external command. The documentation says don't do that.

what's mean of trying to have getmail run an external command. ?

难道必须换成普通用户吗？
thanks