i am getting mailbox locking problems here is an strace mail
<SNIP> open("/var/spool/mail/<myhostname>.cf86b", O_WRONLY|O_CREAT|O_TRUNC|O_EXCL|O_SYNC, 0) = -1 EACCES (Permission denied) setgid(1000) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 write(2, "Unable to lock mailbox: Permissi"..., 42Unable to lock mailbox: Permission denied ) = 42 close(3) = 0 munmap(0x400f5000, 4096) = 0 munmap(0x40015000, 4096) = 0 munmap(0x40014000, 4096) = 0 _exit(0) = ? ls -l /var/spool/mail drwxrwsr-x 2 root mail 4096 Mar 30 11:13 ./ On Solaris and /var/mail has a sticky bit set ls -ald /var/mail/ drwxrwxrwt 3 root mail 1024 Mar 30 11:15 /var/mail/