rc file on debian

[jgalvez]

Hi i wish to know where's rc file that qmail uses it.
Rc has for example this :
#!/bin/sh
exec /command/softlimit -m 2000000 \
/usr/local/bin/tcpserver -v -R -u 106 -g 103 0 smtp \
/var/qmail/bin/qmail-smtpd 2>&1

Thanks.

Jose