How to configure exim with docker for sendmail

Question

I am using docker container for emails using this exim image

https://registry.hub.docker.com/u/tianon/exim4/

This works fine if i use smtp host as conatiner name in other website and

Now my joomla site is using sendmail and i am not able to figure out how to link sendmail with exim container

I get this error when try to send mail

Could not execute: /usr/sbin/sendmail

thats right because snedmail is not installed within joomla container but how can fix that

Answer 1

According to the documentation , Joomla has native support for sending mail to an SMTP server. However, if that won't work (eg, if you have extensions that ignore Joomla's settings and always try to use a local sendmail binary), you can install a sendmail alternative that performs the necessary SMTP transaction for you.

A common solution is msmtp , which 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:

ln -s /usr/bin/msmtp /usr/sbin/sendmail

Provided that you put the appropriate configuration in place, this should solve your problem.

Answer 2

Just about all major MTAs support a "sendmail compatibility mode", and Exim does support that. The fix is simple. As root, do:

cd /usr/sbin
ln -s exim sendmail

Then when your application call /usr/sbin/sendmail and passes a message to it on STDIN, exim will parse the commandline options in a sendmail compatibility mode.