/var/ is in xmail 1.27-1.2.
This file is owned by root:root, with mode 0o755.
..
/var/cache/xmail/
/var/cache/xmail/dnscache/
/var/cache/xmail/dnscache/mx/
/var/cache/xmail/dnscache/ns/
/var/cache/xmail/tabindex/
/var/spool/
/var/spool/xmail/
/var/spool/xmail/domains/
/var/spool/xmail/pop3linklocks/
/var/spool/xmail/pop3locks/
/var/spool/xmail/spool/
/var/spool/xmail/spool/local/
/var/spool/xmail/spool/temp/
/var/lib/
/var/lib/xmail/
/var/lib/xmail/sendmail/
/var/lib/xmail/sendmail/sendmail
/var/lib/xmail/sendmail/xsendmail
/var/lib/xmail/pop3links/
/var/lib/xmail/cmdaliases/
/var/lib/xmail/curr_ver
/var/lib/xmail/userauth/
/var/lib/xmail/userauth/smtp/
/var/lib/xmail/userauth/pop3/
/var/lib/xmail/custdomains/
/var/lib/xmail/filters/
/var/log/
/var/log/xmail/
/var/cache/
/var/lib/xmail/domains
/var/lib/xmail/bin
/var/lib/xmail/dnscache
/var/lib/xmail/logs
/var/lib/xmail/cmd_line
/var/lib/xmail/pop3linklocks
/var/lib/xmail/pop3locks
/var/lib/xmail/tabindex
/var/lib/xmail/spool