Scoring questions

[Computer Bob]

Nothing installed non-ubuntu regarding mail or mail routines.
All done via apt-get install.

I did find:

/etc/postfix/master.cf contains:

spamassassin unix -     n       n       -       -       pipe
         user=spamd argv=/usr/bin/spamc -f -e
         /usr/sbin/sendmail -oi -f ${sender} ${recipient}

amavis     unix  -       -       y       -       2       smtp
     -o smtp_data_done_timeout=1200
     -o smtp_send_xforward_command=yes
127.0.0.1:10025 inet n   -       y       -       -       smtpd
     -o content_filter=
     -o local_recipient_maps=
     -o relay_recipient_maps=
     -o smtpd_restriction_classes=
     -o smtpd_client_restrictions=
     -o smtpd_helo_restrictions=
     -o smtpd_sender_restrictions=
     -o smtpd_recipient_restrictions=permit_mynetworks,reject
     -o mynetworks=127.0.0.0/8
     -o strict_rfc821_envelopes=yes
     -o 
receive_override_options=no_unknown_recipient_checks,no_header_body_checks

/etc/postfix/main.cf contains:

postscreen_dnsbl_threshold = 2
postscreen_dnsbl_sites = zen.spamhaus.org*2 bl.spamcop.net*1 
b.barracudacentral.org*1

also:

root at M1-2:~# cd /usr/share/perl5/Mail/SpamAssassin
root at M1-2:/usr/share/perl5/Mail/SpamAssassin# stat -c "%a %n" ./Plugin/
555 ./Plugin/
root at M1-2:/usr/share/perl5/Mail/SpamAssassin# stat -c "%a %n" 
./Plugin/SpamCop.pm
555 ./Plugin/SpamCop.pm
root at M1-2:/usr/share/perl5/Mail/SpamAssassin#

Why am I not suprised ?
Your thoughts on all these ?
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