Mail function headers

[VooDooRT]

Is it possible to edit the entire header of a mail sent through php?

I want to change the servers it goes through and all the header info. Basically making the e-mail 100% anonymous.

This isn't for anything devious, just a project I'm working on for a client.

I know the mail() function has a header area, BUT, how much of the header can you set, and how would you set it?

Thanks in advance.

BTW, I know how to change the FROM and REPLY TO tags, just not anything else.

Thanks!

[the_Igel]

You can set all other headers the same way.
But the information about servers the message foes through can't be changed, as it's added after the message is sent 🙂
It's added not by you, but by those servers...