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postfix-cloudflare (sha256:4a09b7deffcc66b962f0d3c2c20167a9ffb4c5c26f9353cce2d3999e4df67fb1)

Published 2025-09-11 06:54:48 +00:00 by tilian

Installation

Pull the image from the command line:

docker pull git.tburg.net/tilian/postfix-cloudflare@sha256:4a09b7deffcc66b962f0d3c2c20167a9ffb4c5c26f9353cce2d3999e4df67fb1

Digest

sha256:4a09b7deffcc66b962f0d3c2c20167a9ffb4c5c26f9353cce2d3999e4df67fb1

For more information on the Container registry, see the documentation.

Image layers

ADD alpine-minirootfs-3.20.7-x86_64.tar.gz / # buildkit

CMD ["/bin/sh"]

LABEL AUTHOR=Tilian Burger <me@tilian.au>

LABEL DESCRIPTION=A Docker image for running Postfix with SSL/TLS and Cloudflare DNS for ACME challenges.

RUN /bin/sh -c apk add --no-cache postfix certbot certbot-dns-cloudflare # buildkit

VOLUME [/etc/letsencrypt]

ENV POSTFIX_MYNETWORKS=127.0.0.1/32

ENV ACME_EMAIL=your_acme_email

ENV DOMAIN=your_domain.com

ENV RELAYHOST=replace.mail.protection.outlook.com

ENV RELAY_PORT=25

COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh # buildkit

RUN /bin/sh -c chmod +x /usr/local/bin/docker-entrypoint.sh # buildkit

EXPOSE map[25/tcp:{}]

ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]

Labels

Key	Value
AUTHOR	Tilian Burger <me@tilian.au>
DESCRIPTION	A Docker image for running Postfix with SSL/TLS and Cloudflare DNS for ACME challenges.

Details

Container

2025-09-11 06:54:48 +00:00

0

OCI / Docker

linux/amd64

30 MiB

Versions (37) View all

main-01f80fd 2025-09-12

latest 2025-09-12

main 2025-09-12

dev-opendkim 2025-09-12

dev-opendkim-3213a3a 2025-09-12