差異處

這裏顯示兩個版本的差異處。

--- mail:postfix [2010/02/19 16:17] – wenpei
+++ mail:postfix [2011/05/22 19:58] (目前版本) – wenpei
@@ 行 87: / 行 87: @@
 ====== Reference ======
 Postfix 技術手冊：http://books.google.com/books?id=H9yrO841raoC
+====== Amavisd - Anti-Spam / Anti-Virus ======
+===== For FreeBSD =====
+http://www.wretch.cc/blog/chuchiming/15421032
+http://blog.weithenn.org/2009/06/freebsdpostfix-amavisd-new-uvscan.html
+經由 Amavisd 橋接，過濾垃圾信及病毒信。
+  portinstall security/amavisd-new security/clamav p5-Mail-SpamAssassin
+編輯 amavisd.conf 設定
+  $mydomain = 'domain.name.tw';
+  $sa_spam_subject_tag = '***SPAM*** ';
+  $sa_tag_level_deflt  = 0;  # add spam info headers if at, or above that level
+  $sa_tag2_level_deflt = 6;  # add 'spam detected' headers at that level
+  $sa_kill_level_deflt = 25;  # triggers spam evasive actions (e.g. blocks mail)
+三個數值可依照需要修改。
+設定各種問題信件的命運：
+<code>
+# $final_virus_destiny      = D_DISCARD;
+# $final_banned_destiny     = D_BOUNCE;
+# $final_spam_destiny       = D_BOUNCE;
+$final_bad_header_destiny = D_PASS;
+</code>
+取消 ClamAV 的註解，並註解掉其他用不到的防毒方式。
+  # ### http://www.clamav.net/
+  ['ClamAV-clamd',
+   \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],
+   qr/\bOK$/m, qr/\bFOUND$/m,
+   qr/^.*?: (?!Infected Archive)(.*) FOUND$/m ],
+編輯 postfix/master.cf，加上
+<code>
+smtp-amavis unix - - n - 2 smtp
+  -o disable_dns_lookups=yes
+  -o smtp_send_xforward_command=yes
+.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
+</code>
+編輯 postfix/main.cf，加上
+  content_filter = smtp-amavis:[127.0.0.1]:10024
+編輯 /etc/rc.conf，加上
+  amavisd_enable="YES"
+編輯 /etc/group，將 amavis 加入 clamav 的群組中，也將 clamav 加入 amavis 群組中
+重新啟動 postfix、amavisd、clameav。
+==== 參考 ====
+  * http://www.ijs.si/software/amavisd/
+  * http://antbsd.twbbs.org/~ant/FNP/Old/amavisd-new.htm
+  * http://www.freebsddiary.org/virus-scanning.php
+  * http://www200.pair.com/mecham/spam/bypassing.html
+  * http://wiki.shsh.ylc.edu.tw/index.php/MailServer
+===== Debian =====
+http://www.debian.org.tw/index.php/Amavisd-new