[CentOS] mail with chnage "from address" not work on CentOS 6

We have CEntOS 6.3 on DELL server.  WE try to use following mail command but failed.  This command perfect work on CentOS 5.X.
$ mail -s "test..." user1 at sun.com -- -f NoReply at App.MD.gov
test
.
EOT
$ /home/app/oracle/dead.letter... Saved message in /home/app/oracle/dead.letter

problem come from "-- -f NoReply at App.MD.gov".  But it work correctly on CentOS 5.x.
Anyone know how to fix it?
Thanks