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最近の更新
/etc/postfix/header_checks.pcre
/^From: (.*)/ WARN From Header: $1 /^To: (.*)/ WARN To Header: $1 /^Cc: (.*)/ WARN Cc Header: $1
/etc/postfix/main.cf
header_checks = pcre:/etc/postfix/header_checks.pcre
こんな感じでログに出力される
From: aaa@hogehoge.com
To: bbb@hoge.jp
Cc: ccc@hogehoge.com
2025-03-02T10:41:31.581092+09:00 mail postfix/cleanup[1060]: 75B1DA03B5: warning: header From: "aaa@hogehoge.com" <aaa@hogehoge.com> from hoge.hogehoge.com[xx.xxx.xx.xx]; from=<aaa@hogehoge.com> to=<bbb@hoge.jp> proto=ESMTP helo=<hoge.hogehoge.com>: From Header: "aaa@hogehoge.com" <aaa@hogehoge.com> 2025-03-02T10:41:31.581236+09:00 mail postfix/cleanup[1060]: 75B1DA03B5: warning: header To: =?iso-2022-jp?B?GyRCPy5MbxsoQiAbJEI+PjBmGyhC?= <bbb@hoge.jp> from hoge.hogehoge.com[xx.xx.xx.xx]; from=<aaa@hogehoge.com> to=<bbb@hoge.jp> proto=ESMTP helo=<hoge.hogehoge.com>: To Header: =?iso-2022-jp?B?GyRCPy5MbxsoQiAbJEI+PjBmGyhC?= <bbb@hoge.jp> 2025-03-02T10:41:31.581360+09:00 mail postfix/cleanup[1060]: 75B1DA03B5: warning: header CC: "ccc@hogehoge.com" <ccc@hogehoge.com> from hoge.hogehoge.com[xx.xx.xx.xx]; from=<aaa@hogehoge.com> to=<bbb@hoge.jp> proto=ESMTP helo=<hoge.hogehoge.com>: Cc Header: "ccc@hogehoge.com" <ccc@hogehoge.com>
/etc/postfix/maps/sender_header_filter.pcreにも、下記を追記
/etc/postfix/maps/sender_header_filter.pcre
/^From: (.*)/ WARN From Header: $1 /^To: (.*)/ WARN To Header: $1 /^Cc: (.*)/ WARN Cc Header: $1
/etc/postfix/main.cf
smtp_header_checks = pcre:/etc/postfix/maps/sender_header_filter.pcre
docker-compose cp mailserver:/etc/postfix/maps/sender_header_filter.pcre ./docker-data/dms/config/
compose.yaml
volumes: - ./docker-data/dms/config/header_checks.pcre:/etc/postfix/header_checks.pcre - ./docker-data/dms/config/sender_header_filter.pcre:/etc/postfix/maps/sender_header_filter.pcre
./docker-data/dms/config/postfix-main.cf
header_checks = pcre:/etc/postfix/header_checks.pcre
下記両方とも設定が入っているか確認
# docker-compose exec mailserver grep header_checks /etc/postfix/main.cf header_checks = pcre:/etc/postfix/header_checks.pcre smtp_header_checks = pcre:/etc/postfix/maps/sender_header_filter.pcre