[CentOS] how to configure the mail server to put the code before sending the mail

[jkinz at kinz.org]

On Tue, Dec 02, 2008 at 10:03:14AM -0800, ann kok wrote:

> Hi All   How to configure the mail server to put the code before
> sending out the mail?   eg: When I send out the mail to yahoo to some
> receiver's address, it needs me to put the number and letter as same
> as the box before sending out the mail   Thank you

Hi Ann, 
I'm sorry, I don't understand what you are asking, could you tell
us what you mean by "mail server" in this email? 
Jeff

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