ls -la /usr/bin/qmail* gives following
-rwx--x--x 1 root qmail 7628 May 23 10:58 /usr/bin/qmail-clean
-rwx--x--x 1 root qmail 4388 May 23 10:58 /usr/bin/qmail-getpw
-rwsr-xr-x 1 root qmail 31548 May 23 10:58 /usr/bin/qmail-inject
-rwxr-x--x 1 root qmail 31720 May 23 10:58 /usr/bin/qmail-local
-rwx------ 1 root qmail 14440 May 23 10:58 /usr/bin/qmail-lspawn
-rwx------ 1 root qmail 14184 May 23 10:58 /usr/bin/qmail-newmrh
-rwx------ 1 root qmail 10068 May 23 10:58 /usr/bin/qmail-newu
-rwxr-xr-x 1 root qmail 18780 May 23 10:58 /usr/bin/qmail-pop3d
-rwx--x--x 1 root qmail 9160 May 23 10:58 /usr/bin/qmail-popup
-rwx--x--x 1 root qmail 14372 May 23 10:58 /usr/bin/qmail-pw2u
-rwxr-xr-x 1 root qmail 10520 May 23 10:58 /usr/bin/qmail-qmqpc
-rwxr-xr-x 1 root qmail 14340 May 23 10:58 /usr/bin/qmail-qmqpd
-rwxr-xr-x 1 root qmail 18884 May 23 10:58 /usr/bin/qmail-qmtpd
-rwsr-xr-x 1 root qmail 14316 May 23 10:58 /usr/bin/qmail-qread
-rwxr-xr-x 1 root qmail 359 May 26 09:18 /usr/bin/qmail-qstat
-rwsr-xr-x 1 qmailq qmail 10620 May 23 10:58 /usr/bin/qmail-queue
-rwx--x--x 1 root qmail 23060 May 23 10:58 /usr/bin/qmail-remote
-rwx--x--x 1 root qmail 10396 May 23 10:58 /usr/bin/qmail-rspawn
-rwx--xr-x 1 root qmail 34816 May 23 10:58 /usr/bin/qmail-send
-rwxr-xr-x 1 root qmail 13200 May 23 10:58 /usr/bin/qmail-showctl
-rwxr-xr-x 1 root qmail 23264 May 23 10:58 /usr/bin/qmail-smtpd
-rwx------ 1 root qmail 5524 May 23 10:58 /usr/bin/qmail-start
-rwxr-xr-x 1 root qmail 7528 May 23 10:58 /usr/bin/qmail-tcpok
-rwxr-xr-x 1 root qmail 9852 May 23 10:58 /usr/bin/qmail-tcpto
-rwxr-xr-x 1 root qmail 3097 May 28 13:18 /usr/bin/qmailctl