backnoob.blogg.se - Postfix docker syslog

#POSTFIX DOCKER SYSLOG HOW TO#
#POSTFIX DOCKER SYSLOG APK#
#POSTFIX DOCKER SYSLOG INSTALL#
#POSTFIX DOCKER SYSLOG UPDATE#

Postconf -e "smtpd_recipient_restrictions=reject_non_fqdn_recipient,reject_unknown_recipient_domain,reject_unverified_recipient" # Use 587 (submission)

Postconf -e "smtp_sasl_security_options=noanonymous" Postconf -e "smtp_sasl_password_maps=lmdb:/etc/postfix/sasl_passwd" Postconf -e relayhost =$POSTFIX_RELAY_HOSTĮcho "$POSTFIX_RELAY_HOST $POSTFIX_RELAY_USER :$POSTFIX_RELAY_PASSWORD " > /etc/postfix/sasl_passwd Postconf -e "relay_domains=" # Relay configuration # Do not relay mail from untrusted networks Postconf -e myhostname =$POSTFIX_HOSTNAME Postconf -e "smtpd_helo_restrictions=permit_mynetworks,reject_invalid_helo_hostname,permit" # Don't allow requests from outside Postconf -e "message_size_limit=10240000" # Reject invalid HELOs Postconf -e "mydestination=" # Limit message size to 10MB It's not used, but postfix complains if the.

#POSTFIX DOCKER SYSLOG UPDATE#

Postconf -e "maillog_file=/dev/stdout" # Update aliases database. Postconf -e "smtputf8_enable=no" # Log to stdout # Disable SMTPUTF8, because libraries (ICU) are missing in Alpine Val = " $(& 2 'error: relay options are not specified 'Įcho >& 2 ' You need to specify POSTFIX_HOSTNAME, POSTFIX_RELAY_HOST, POSTFIX_RELAY_USER and POSTFIX_RELAY_PASSWORD (or POSTFIX_RELAY_PASSWORD_FILE)' # usage: file_env VAR # ie: file_env 'XYZ_PASSWORD' 'example' # (will allow for "$XYZ_PASSWORD_FILE" to fill in the value of # "$XYZ_PASSWORD" from a file, especially for Docker's secrets feature) # copied from mariadb docker entrypoint file You can simply send the mail to the internal Postfix relay, which will then relay your email This is especially useful if you want to send mails from a container with no internet access. In this specific case, we are configuring Postfix as in internal relay server. Finally we start Postfix inįoreground mode ( start-fg). We also register a custom entrypoint script, which allows us to configure Postfix.

#POSTFIX DOCKER SYSLOG INSTALL#

So what is happening here? We install Postfix and its dependencies from the Alpine repository, mark used folders # Clean up (rm "/tmp/"* 2>/dev/null || true ) & (rm -rf /var/cache/apk/* 2>/dev/null || true ) # Mark used folders VOLUME # Expose mail submission agent port EXPOSE 587 # Configure Postfix on startup COPY docker-entrypoint.sh /usr/local/bin/ ENTRYPOINT # Start postfix in foreground mode CMD

#POSTFIX DOCKER SYSLOG APK#

# Inspired by # Alpine 3.13 ships with Postfix 3.5.10 FROM alpine:3.13 # Install dependencies RUN apk add -no-cache -update postfix cyrus-sasl ca-certificates bash & \Īpk add -no-cache -upgrade musl musl-utils & \ The Dockerfile is based on Alpine 3.13, which ships with Postfix 3.5.10. Sensitive data, and you should not blindly trust and use an image published on Docker Hub. This has two big advantages: maximum flexibility and control. We will create an image from scratch, based on Alpine Linux. There are already a lot of good and ready to use Postfix Docker images out there, but in this post So in order to use Postfix in a container, version 3.4.0 or higher is recommended.

It is possible to directly log to stdout, which eliminates the previous syslogd dependency. This is needed to directly start the Postfix service in a container. It is possible to run Postfix in foreground mode. Containerizing Postfix A word on compatibility Postfix attempts to be fast, easy to administer, and secure. Postfix is a mail server and a widely used alternative to Sendmail. Since there a some tricky parts in doing so, I wrote a guide on how you can do this yourself. On my public node, which would simply receive mail from PHP containers and services on private nodesĪnd relay those mails to my (still managed) SMTP mail-server. Since it had no internetĪfter some research and some thinking I came up with a solution: running a mail relay service

One of my services ran on a private node but still needed to send e-mails.

The PHP Docker containers I used didn’t ship with a sendmail binary, so I couldn’t send e-mails.

It runs Docker swarm modeĪnd consists out of three machines: two without direct internet access (private nodes) and one withĭuring the transition two problems popped up:

#POSTFIX DOCKER SYSLOG HOW TO#

How to run a Postfix mail server in a Docker containerĪbout a year ago I moved all my websites and services to a private cloud. How to run a Postfix mail server in a Docker container ›› xc2 journal journal