setup nullmailer

draft

install

    apt install nullmailer
ls -lF /usr/sbin/sendmail

setup

cd /etc/nullmailer/
    echo DOMAIN-HERE > defaultdomain
echo root@DOMAIN-HERE > adminaddr # from address
    vi /etc/nullmailer/remotes

smarthost setup

    RELAY-SERVER smtp --starttls

–or– SASL

    SMTP-RELAY-HERE --daemon -p 465 --ssl --user=USER-HERE --pass=PASSWORD-HERE

ready to go

    systemctl status nullmailer.service

acceptance

see null-mailers

resources

https://wiki.debian.org/nullmailer

https://wiki.archlinux.org/index.php/Nullmailer

Using nullmailer with STARTTLS and SMTP-Auth https://metzlog.srcbox.net/2012/11/nullmailer-with-starttls/

How to enable secure authentication (ssl,tls,starttls) in nullmailer 1.0.5. and upgrade nullmailer to 1.11 https://unix.stackexchange.com/questions/252179/how-to-enable-secure-authentication-ssl-tls-starttls-in-nullmailer-1-0-5-and

Lightweight outgoing SMTP server https://unix.stackexchange.com/questions/1449/lightweight-outgoing-smtp-server