Consider changing the mail agent from SSMTP to MSMTP.

[manios]

ssmtp is currently unmaintained according to this. and this page. We may need to review and consider changing the mail agent to msmtp.

References

• quantum/esos #207
• ssmtp alternative
• Debian Wiki msmtp - light SMTP client with support for server profiles

[Giancarlo1974]

RUN apk add msmtp mailx
COPY  msmtprc /etc/msmtprc
COPY  aliases /etc/aliases
RUN            ln -s $(which msmtp) /bin/mail            && \
            ln -s $(which msmtp) /usr/sbin/mail

[Here a nice guide](https://wiki.alpinelinux.org/wiki/Relay_email_to_gmail_(msmtp,_mailx,_sendmail)