format_c@linux:~> ssh -X [EMAIL=format_c@server.lan.de]format_c@server.lan.de[/EMAIL]
[EMAIL=format_c@server.lan.de]format_c@server.lan.de[/EMAIL]'s password: 
3369: Permission denied, please try again.
[EMAIL=format_c@server.lan.de]format_c@server.lan.de[/EMAIL]'s password: 
Last login: Wed Mar 24 21:30:30 2004 from linux.lan.de
Have a lot of fun...
format_c@server:~> export -p | grep DISPLAY
declare -x DISPLAY="localhost:10.0"
format_c@server:~>