[CentOS] dumb sendmail question -- how to get outbound messages to use "example.com" instead of hostname?

[Brent L. Bates]

     Since you are using NAT, the important IP address and host name
associated with it is the one the outside world sees.  Does that IP address
have a host name the world sees and does that name then resolve to the same IP
address?

-- 

  Brent L. Bates (UNIX Sys. Admin.)
  M.S. 912				Phone:(757) 865-1400, x204
  NASA Langley Research Center	  	  FAX:(757) 865-8177
  Hampton, Virginia  23681-0001
  Email: B.L.BATES at larc.nasa.gov	http://www.vigyan.com/~blbates/