logwatch broken after replacing sendmail with postfix

[G H]

hello all,
on sparc S10, i got this error:
Can't exec "sendmail": No such file or directory at 
/opt/csw/bin/logwatch.pl line 1017, <TESTFILE> line 3.
Can't execute sendmail -t: No such file or directory

CSWpostfix-2.9.4,REV=2012.09.19 is installed, and i removed SUNWsndmr 
SUNWsndmu, as stated in /opt/csw/share/doc/postfix/README.CSW. The links 
are ok:
fury # ls -l /usr/lib/sendmail /usr/sbin/newaliases /usr/bin/mailq
lrwxrwxrwx   1 root     root          18 Jul 21 14:50 /usr/bin/mailq -> 
/opt/csw/bin/mailq
lrwxrwxrwx   1 root     root          22 Jul 21 14:50 /usr/lib/sendmail 
-> /opt/csw/sbin/sendmail
lrwxrwxrwx   1 root     root          23 Jul 21 14:50 
/usr/sbin/newaliases -> /opt/csw/bin/newaliases

does it mean that it just lacks the link:
/usr/sbin/sendmail -> /opt/csw/sbin/sendmail

thanks,

gerard