Exim4 docker

I have been working with PHP for about 6 years now and my first public facing development server is about the same age. It started life as a 32 bit 1GB Linode probably running Ubuntu v Maintaining servers whether they are physical or virtual is a real pain in the neck, as time goes by you develop apps, you install more and more software and your simple php development platform starts to become quite complex.

When it comes to a major OS update e. Ubuntu 14LTS to 16LTS where mysql and php versions are changing then keeping all your now live websites, blogs and apps running can become a real challenge. Docker containers wrap up a piece of software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, system libraries — anything you can install on a server. This guarantees that it will always run the same, regardless of the environment it is running in.

By moving each of my apps and server services into a container customised for the requirements of that app, be it a specific PHP or MySQL version or operating system I containerised virtualised all my server applications: php, mail, cloud storage, vpn, webapps, blogs, forums, Magento etc.

Discourse Docker container: send mail through Exim

All the old apps you know are not compatibile with the latest version of PHP i. Magento 1. The docker host server can now run a very minimal operating system, ideally with just Docker installed making future upgrades pretty uncomplicated. Because all your apps are in containers moving to a new server is as simple as moving the container configuration and data files to the new server and starting the containers, you no longer have to worry about upgrade compatibility issues as your application is running in an container image that in theory will never change!

The golden rule to follow is to ensure that you always treat your containers as volatile storage and never store live data in them, or commit configurations that are not included in your configuration files. By separating your application data into persistent docker volumes located in logically named folders basic housekeeping tasks like log management and backups are now also simplified.

exim4 docker

With all app data located in data folders, your container application data can be easily backed up. In practice Docker just works, the containers start and stop in seconds, and in some cases your apps will run much faster. There is a lot of work in configuring the container to replicate the environment you want, but once your Docker file is written it becomes a good template for future apps.

exim4 docker

I upgraded to an 8GB Linode where the ram usage now averages at just over 4GB for 40 running containers leaving me room for expansion. I recommend building your containers using docker compose. Docker compose lets you keep your container configuration in one folder and provides an easy command line interface to start, stop and build containers. Here for example is the docker composer file for my Exim4 mail server container.

Here you see the docker compose file creates two services, Exim4 and Spam Assassin. The file also configures health checks and networking.

More about building containers such as this Exim4 mail server with spam assassin will follow in another post. This site uses Akismet to reduce spam. Learn how your comment data is processed. Please click here if you are not redirected within a few seconds.

This post was last updated 2 years 11 months 10 days ago, some of the information contained here may no longer be actual and any referenced software versions may have been updated!

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Necessary Always Enabled.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Now my joomla site is using sendmail and i am not able to figure out how to link sendmail with exim container. However, if that won't work e.

A common solution is msmtpwhich is often used by mutt users to provide SMTP server for the mutt mailer. The msmtp client is command-line compatible, so you can install msmtp and then:. Just about all major MTAs support a "sendmail compatibility mode", and Exim does support that. The fix is simple. As root, do:. Learn more. How to configure exim with docker for sendmail Ask Question. Asked 5 years, 1 month ago. Active 5 years, 1 month ago.

Viewed 3k times. Active Oldest Votes. Todd Lyons Todd Lyons 9 9 silver badges 17 17 bronze badges. Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.The Discourse deployment was greatly simplified by introducing Docker support as I have written about before. Discourse heavily depends on e-mail, and its ability to send mail to arbitrary recipients is essential. While the recommended way is to use an external service like Mandrill, it is also possible to use a local MTAsuch as Exim. However, when you set up the vanilla Discourse Docker container, it does not contain an pre-configured MTA, which is fine, since many have a well-configured MTA running on the host already.

The question is how to use that MTA for letting Discourse send mail. Usually, MTAs on smaller machines are configured to listen on localhost only, to not be exposed to the Internet and to not be mis-used for spam.

The network within the container is a virtual one, and it is cleanly separated from the host. That is, when Discourse running in a container tries to reach an SMTP server on localhostit cannot reach an MTA listening on localhost outside of the container.

There is a straight-forward solution: Docker comes along with a network bridge. In fact, it provides a private network in the This network can be used for establishing connectivity between a network application within a Docker container and the host. Likewise, I have set up Exim4 on the Debian host for relaying mails that are incoming from localhost or from the local virtual Docker network.

First I looked up the IP address of the docker bridge on the host, being I then instructed Exim to treat this as local interface and listen on it. Also, Exim was explicitly told to relay mail incoming from the subnet The config update is in place after calling update-exim4.

First of all, I SSHd into the container by calling launcher ssh app. I then called python. Indeed, the mail arrived at my Google Mail account. Until I got the configuration right, I observed essentially two different classes of errors:. Introduction The Discourse deployment was greatly simplified by introducing Docker support as I have written about before. SMTP ' Share this: Twitter Email LinkedIn.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

exim4 docker

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

This is a simple Docker image for Exim4 based on the official alpine image. To send email via a smart host disable the dnslookup router in your exim4. And add a smarthost router like follows:. Replace your. For details see the official documentation. For details see 9. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. No description, website, or topics provided. Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.

Latest commit. Latest commit 5c Jul 22, Use it like this in your docker-compose. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Jul 21, Update documentation. Jul 22, Fix configuration. Jun 23, GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. It performs configuration at startup and uses supervisor to run exim4 and should shutdown correctly. This can then be linked to another contain to be used as the SMTP host, e.

How to easily run Postgres in Docker

Then the exim4 relay via Gmail could then be used by setting the mail configure to use SMTP with a smtp host of 'mail'. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Exim4 Docker container.

Shell Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit Fetching latest commit…. Exim4 Docker Container A Exim 4 satellite installation. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Set the version to 1. Jan 4, Initial version. Jun 26, By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up. I am trying to set up mailman3 using exim4 to run my email lists.

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If I try sending an email to one of my lists, the email gets delivered to the exim4 instance, which then keeps trying to deliver the email to itself over and over again until eventually it aborts the process as it detects it is in a loop.

At no point does it try to deliver the email to mailman-coreas far as I can tell in the logs. I have tried to set everything up according to the documentation for hooking up the MTA to mailman.

My entire setup is using dockerso I am using the mailman docker images and documentation. The internal networking works fine for everything, so it shouldn't be a problem with that. The only thing I can think of is that exim is not properly loading the configuration, but I don't know how to check this other than by sending it emails and watching to see what happens and so far they just get stuck in a mail loop. Sign up to join this community. The best answers are voted up and rise to the top.

Home Questions Tags Users Unanswered. Asked 9 months ago. Active 9 months ago. Viewed 88 times. Here are the relevant sections in my docker-compose. PostgreSQLDatabase" mailman-web: image: quay. This is configured in docker-compose.

Seems like it's just not using the correct transport. To check what router exim will use for a given domain: exim -bt name example. You were right, thanks for that little command.In our role as Technical Support Providers for web hosting companies and infrastructure providers, we provision and manage Docker systems that best suit their purposes.

One of the key tasks involved in this Docker management services, is editing docker images. Docker helps to easily create and run container instances with our desired applications. These containers are created using images.

A docker image is a package of code, libraries, configuration files, etc. The images are stored in repositories storage locations.

Images can be downloaded from a repository and executed to create docker containers.

exim4 docker

So, in effect, a container is just a run-time instance of a particular image. To create a Docker image, a Dockerfile is used. A dockerfile is a text document, usually saved in YAML format. It contains the list of commands to be executed to create an image.

3CX inside Docker container

The images provided by repositories are specific to a single instance type creation. In many scenarios, users need to edit these images to suit their needs. For customizing or tweaking a docker image to specific requirements, we edit this docker image.

But Docker has a drawback that an image cannot be directly edited or modified. The most commonly used method is to edit the Dockerfile that is used to create the Docker image. This is a convenient and fool-proof method to edit docker image. To modify the image used by an existing container, we delete that container, edit the Docker file with the changes needed and recreate the container with the new file.

This image can be modified to another one or version by editing this file. In cases where changes are to be made for only one container, it can be edited in the file. After making changes to the image, only the corresponding containers need to be recreated and others can be left intact. As Docker containers are meant to be restarted and recreated, they cannot be used to store persistent data.

The data in Docker infrastructure are usually stored in Docker volumes. This enables us to easily edit a docker image without losing the underlying data.