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Added HEADER_CHECKS configuration option (#15)

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* Added HEADER_CHECKS  configuration option
This commit is contained in:
malware-watch 2019-10-03 09:01:53 +02:00 • committed by Boky
parent 4d6919e54c
commit a9a09b0085
4 changed files with 29 additions and 3 deletions
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1
Dockerfile
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@ -40,6 +40,7 @@ RUN true && \
COPY supervisord.conf /etc/supervisord.conf
COPY rsyslog.conf /etc/rsyslog.conf
COPY opendkim.conf /etc/opendkim/opendkim.conf
COPY header_checks /etc/header_checks
COPY run.sh /run.sh
COPY opendkim.sh /opendkim.sh
RUN chmod +x /run.sh /opendkim.sh

9
README.md
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@ -138,6 +138,15 @@ Example:
docker run --rm --name postfix -e "ALLOWED_SENDER_DOMAINS=example.com example.org" -e "MASQUERADED_DOMAINS=example.com" -p 1587:587 boky/postfix
```
### `HEADER_CHECKS`
Each message header line is compared against a pre-configured list of patterns. When a match is found the corresponding action is executed. The default patterns can be found in the `header_checks` file. Simply append new or delete unwanted patterns. Set to a non-empty string (usually "1" or "yes") to enable.
Example:
```
docker run --rm --name postfix -e "HEADER_CHECKS="yes" example.org" -p 1587:587 boky/postfix
```
## `DKIM`
**This image is equiped with support for DKIM.** If you want to use DKIM you will need to generate DKIM keys yourself.

11
header_checks Normal file
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@ -0,0 +1,11 @@
# Sample For Dropping Headers:
#/^Header: IfContains/ IGNORE
/^Received:.*with ESMTPSA/ IGNORE
/^Received:.*with ESMTPS/ IGNORE
/^Received:.*with SMTP/ IGNORE
/^Received:/ IGNORE
/^X-Originating-IP:/ IGNORE
/^X-Mailer:/ IGNORE
/^X-PHP-Originating-Script:/ IGNORE
/^User-Agent:/ IGNORE
/^Mime-Version:/ REPLACE Mime-Version: 1.0

11
run.sh
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@ -195,9 +195,14 @@ else
fi
if [ ! -z "$MASQUERADED_DOMAINS" ]; then
echo -en "‣ $notice Setting up address masquerading: ${emphasis}$MASQUERADED_DOMAINS${reset}"
postconf -e "masquerade_domains = $MASQUERADED_DOMAINS"
postconf -e "local_header_rewrite_clients = static:all"
echo -e "‣ $notice Setting up address masquerading: ${emphasis}$MASQUERADED_DOMAINS${reset}"
postconf -e "masquerade_domains = $MASQUERADED_DOMAINS"
postconf -e "local_header_rewrite_clients = static:all"
fi
if [ ! -z "$HEADER_CHECKS" ]; then
echo -e "‣ $notice Setting up header_checks"
postconf -e "smtp_header_checks=regexp:/etc/header_checks"
fi
DKIM_ENABLED=