Ok, let's go

Nota: postfix ne scannera que les mails qu'il recevra, donc il te faudra fetchmail par ex pour les recuperer d'abord. ET ne pas demander a fetchmail de passer par un mda directement. 1 main.cf:

# see /usr/share/postfix/main.cf.dist for a commented, fuller
# version of this file.
# Do not change these directory settings - they are critical to Postfix
# operation.
command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix
program_directory = /usr/lib/postfix
setgid_group = postdrop
biff = no
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
transport_maps = hash:/etc/postfix/transport
# domaine interne, enregistré dans le dns local
myhostname = isis.localnet.fr
myorigin = localnet.fr
mydomain = localnet.fr
mydestination = $myhostname, $mydomain, localhost.$mydomain, autres.domaines
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
mynetworks = 127.0.0.0/8, 192.168.0.0/24
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
append_dot_mydomain = yes
home_mailbox = Maildir/
default_transport = uucp:uucpssh
content_filter = smtp-amavis:[127.0.0.1]:10024
max_use = 10

2:master.cf a rajouter a la fin:

smtp-amavis unix - - n - 2 lmtp -o lmtp_data_done_timeout=
1200 -o lmtp_send_xforward_command=yes
127.0.0.1:10025 inet n - n - - 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 smtpd_error_sleep_time=0 -o smtpd_soft_error_limit=1001 -o smtpd_hard_error_limit=1000

pour /etc/amavis/amavisd.conf j'ai pris la conf d'example et j'ai un peu adapté pour le spam et autre.