MacJanitor and Warning

[ghyde]

When I run MacJanitor, I get the following output. Can someone tell me what this means? I'm especially concerned with the Warnings that follow Mail . Thanks:

mail:
/etc/mail/sendmail.cf: line 81: fileclass: cannot open '/etc/mail/local-host-names': Group writable directory
Msmtp: Warning: first argument in [IPC] mailer must be TCP or FILE
Mesmtp: Warning: first argument in [IPC] mailer must be TCP or FILE
Msmtp8: Warning: first argument in [IPC] mailer must be TCP or FILE
Mdsmtp: Warning: first argument in [IPC] mailer must be TCP or FILE
Mrelay: Warning: first argument in [IPC] mailer must be TCP or FILE

network:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
lo0 16384 <Link> 122922 0 122922 0 0
lo0 16384 127 localhost 122922 0 122922 0 0
en0 1500 <Link> 00.03.93.07.1d.2e 244105 0 318446 0 0
en0 1500 (255)fd.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.d2.ec.65.6e.00.00.65.74.68.65.72.5f.69.66.61.74.74.00.00.00.70.b0.44.00.00.00.00.00.00.00.00.00.00.00.bf.ff.fe.b8.00.00.00.0c.00.00.00.02.bf.ff.fe.c8.bf.ff.fe.bc.00.00.19.d8.bf.ff.fd.c0.00.00.00.00.41.11.2b.1c.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.02.bf.ff.fe.c4.00.00.00.02.bf.ff.fe.c8.bf.ff.fe.bc.00.00.67.e4.bf.ff.fe.10.00.00.10.00.00.00.6d.e8.70.00.89.c4.bf.ff.fe.10.00.00.00.50.00.00.19.fc.00.00.00.40.00.00.00.1f.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.4f.00.00.00.08.00.00.00.06 244105 0 318446 0 0
en0 1500 192.168.1 192.168.1.2 244105 0 318446 0 0


Rotating log files: system.log

Cleaning web server log files:
Done

Subject: localhost weekly run output

Rebuilding locate database:

Rebuilding whatis database:

Rotating log files: ftp.log lookupd.log lpr.log mail.log netinfo.log

Done

Subject: localhost monthly run output

Doing login accounting:
total 161.61
greghyde 70.95
greghyde 51.98
greghyde 37.14
greghyde 1.35
greghyde 0.18

Rotating log files: wtmp

Done