>>You need to use nslookup

Yes, this is what I end up doing.
Here is a function that returns the name of the mail server id there is on, or 
an empty string if there is not.
(tested on Windows)


<CFFUNCTION NAME="nslookup">
   <CFARGUMENT NAME="domain" REQUIRED="yes" TYPE="string">
   <CFEXECUTE name="c:\windows\system32\nslookup.exe"
   arguments=" -type=mx #domain#"
   variable="this.nslookup"
   timeout="10" />
   <CFSET n = findNoCase ("mail exchanger = ", this.nslookup)>
   <CFIF n EQ 0>
     <CFRETURN "">
   <CFELSE>
     <CFRETURN mid (this.nslookup, n+17, 9999)>
   </CFIF>
</CFFUNCTION>

<CFOUTPUT>houseoffusion.com = #nslookup("houseoffusion.com")#<BR>
homeoffusion.com = #nslookup("homeoffusion.com")#
</CFOUTPUT>



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