I'm on ubuntu 16.04. I have a (testing) docker (docker-compose) container running php 5.6 and apache 2.4.

On the production platform (without docker) the mail is sent with sendmail.

How to send test email on docker container (with sendmail)?

Thanks in advance for responses.

1

2 Answers

It works.

In Dockerfile :

# sendmail config
############################################
RUN apt-get install -q -y ssmtp mailutils
# root is the person who gets all mail for userids < 1000
RUN echo "root=" >> /etc/ssmtp/ssmtp.conf
# Here is the gmail configuration (or change it to your private smtp server)
RUN echo "mailhub=smtp.gmail.com:587" >> /etc/ssmtp/ssmtp.conf
RUN echo "AuthUser=" >> /etc/ssmtp/ssmtp.conf
RUN echo "AuthPass=yourGmailPass" >> /etc/ssmtp/ssmtp.conf
RUN echo "UseTLS=YES" >> /etc/ssmtp/ssmtp.conf
RUN echo "UseSTARTTLS=YES" >> /etc/ssmtp/ssmtp.conf
# Set up php sendmail config
RUN echo "sendmail_path=sendmail -i -t" >> /usr/local/etc/php/conf.d/php-sendmail.ini

For testing inside php sendmail container :

echo "Un message de test" | mail -s "sujet de test" 

I succeed with the help of this two documents :

3

If it says:

"Package 'ssmtp' has no installation candidate"

You can use msmtp instead.

Add the following to your dockerfile

# sendmail config
#################
ARG SMTP_PASSWORD=not_provided
# install
RUN apt-get install -q -y msmtp mailutils
# config
COPY msmtprc /etc/msmtprc
RUN chmod 600 /etc/msmtprc
RUN chown www-data:www-data /etc/msmtprc
ARG SMTP_PASSWORD=not_provided
RUN sed -i "s|YourAwesomeStr0ngP4zzw0rd|$SMTP_PASSWORD|g" /etc/msmtprc
# Set up php sendmail config
RUN echo "sendmail_path=/usr/bin/msmtp -t" >> /etc/php/7.3/apache2/conf.d/php-sendmail.ini

Add a msmtprc file to your docker build context:

account default
host mail.yoursmtpserver.com
port 587
tls on
tls_starttls on
tls_trust_file /etc/ssl/certs/ca-certificates.crt
tls_certcheck on
auth on
user
password "YourAwesomeStr0ngP4zzw0rd"
from ""
logfile /var/log/msmtp.log

note: Some changes were made in order to make it work with my particular setup (branching FROM eboraas/apache-php). This applies particularily to the lines:

• ARG SMTP_PASSWORD=not_provided
• RUN chown www-data:www-data /etc/msmtprc
• RUN sed -i "s|YourAwesomeStr0ngP4zzw0rd|$SMTP_PASSWORD |g" /etc/msmtprc
• RUN echo "sendmail_path=/usr/bin/msmtp -t" >> /etc/php/7.3/apache2/conf.d/php-sendmail.ini

You may need to adapt paths, passwords and so on to fit your needs. Keep in mind to set the SMTP_PASSWORD build argument from environment (e.g. SMTP_PASSWORD=<secret> docker-compose build) if you want to use this solution straight away.

Useful resources:

• linux msmtp configuration sends from shell but fails from PHP/apache

1

Your Answer

Sign up or log in

Sign up using Google Sign up using Facebook Sign up using Email and Password Submit

Post as a guest

Post Your Answer Discard

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy