/var/lib/qmail/queue/remote/ is in qmail 1.06-6.
This file is owned by qmails:qmail, with mode 0o700.
..
/var/lib/qmail/queue/remote/0/
/var/lib/qmail/queue/remote/1/
/var/lib/qmail/queue/remote/10/
/var/lib/qmail/queue/remote/11/
/var/lib/qmail/queue/remote/12/
/var/lib/qmail/queue/remote/13/
/var/lib/qmail/queue/remote/14/
/var/lib/qmail/queue/remote/15/
/var/lib/qmail/queue/remote/16/
/var/lib/qmail/queue/remote/17/
/var/lib/qmail/queue/remote/18/
/var/lib/qmail/queue/remote/19/
/var/lib/qmail/queue/remote/2/
/var/lib/qmail/queue/remote/20/
/var/lib/qmail/queue/remote/21/
/var/lib/qmail/queue/remote/22/
/var/lib/qmail/queue/remote/3/
/var/lib/qmail/queue/remote/4/
/var/lib/qmail/queue/remote/5/
/var/lib/qmail/queue/remote/6/
/var/lib/qmail/queue/remote/7/
/var/lib/qmail/queue/remote/8/
/var/lib/qmail/queue/remote/9/