According to Ubuntu 14.04 Server Guide Mail Filtering:
Amavisd-new is a wrapper program that can call any number of content
filtering programs for spam detection, antivirus, etc.
You still need SpamAssassin, so you should not uninstall it. Actually, amavisd-new-postfix
depends on spamassassin
, so removing the package with apt-get remove spamassassin
will also remove Amavis.
This chart visualizes how the pieces fit together (based on the same Mail Filtering guide):
![Ubuntu + Postfix + Amavisd](../../images/3809021042.webp)
You should
remove the pipe to SpamAssassin from your Postfix configuration, i.e. remove:
smtp inet n - - - - smtpd -o content_filter=spamfilter
and
spamassassin
unix - n n - - pipe
flags=R
user=spamuser
argv=/usr/bin/spamc
-e /usr/sbin/sendmail
-oi -f ${sender} ${recipient}
integrate Amavis to Postfix, instead.
For Postfix integration, enter the following from a terminal prompt:
sudo postconf -e 'content_filter = smtp-amavis:[127.0.0.1]:10024'
Next edit /etc/postfix/master.cf and add the following to the end of
the file:
smtp-amavis unix - - - - 2 smtp
-o smtp_data_done_timeout=1200
-o smtp_send_xforward_command=yes
-o disable_dns_lookups=yes
-o max_use=20
127.0.0.1:10025 inet n - - - - smtpd
-o content_filter=
-o local_recipient_maps=
-o relay_recipient_maps=
-o smtpd_restriction_classes=
-o smtpd_delay_reject=no
-o smtpd_client_restrictions=permit_mynetworks,reject
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o smtpd_data_restrictions=reject_unauth_pipelining
-o smtpd_end_of_data_restrictions=
-o mynetworks=127.0.0.0/8
-o smtpd_error_sleep_time=0
-o smtpd_soft_error_limit=1001
-o smtpd_hard_error_limit=1000
-o smtpd_client_connection_count_limit=0
-o smtpd_client_connection_rate_limit=0
-o receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_milters
Also add the following two lines immediately below the "pickup"
transport service:
-o content_filter=
-o receive_override_options=no_header_body_checks