Question : ip address from an email address

I am trying to find out if it is possible for an outside user to find out my email servers public ip address.

I have used several websites that use your email address and trace it back to where it comes from. However W currently use a hosted anti spam service so instead of our ip address we are getting the hosted services ip address.

Is there any way of finding the next ip address in the chain

Answer : ip address from an email address

They cannot necessarily find it our from your DNS records if you use a hosted service, but if you send out an email, all they have to do is look in the header information and that will tell them your IP Address.

What is the issue you are trying to solve, or are you just curious?