Hello,

if you haven't done so yet, you need to edit the
$PLAN9/mail/lib/rewrite file like that:

# send all mail to the gateway or mail server, $smtp,  for delivery
([^!]*)!(.*)	|	"$PLAN9/mail/lib/qmail '\s' 'xxx.xxx.xxx.xxx'" "'\2@\1'"

where xxx.xxx.xxx.xxx is the ip address of your smtp.  I think once I
had some resolution problem, that's why I set it by ip here instead of
by name.  Works fine enough so I never bothered to do it by name
afterwards.

hth,
Mathieu