[syslog-ng]program destination, not respawning programs ?

[Thomas Ackermann]

hy!
i'm using syslog-ng to send remote log messages over an stunnel to a log 
server.
everything's running quite fine, besides one little problem i have..

i'm starting the stunnel with
program("/usr/sbin/stunnel -r 192.168.3.125:6543 -c");

when the stunnel is killed or quits because of a bad connection, 
syslog-ng doesn't even bother 'bout trying to restart it.
is that a wanted behaviour and, or, is there a way to gat syslog-ng to 
respawn processes called with program() ?

thx,
thomas