mSMTP

apt install msmtp-mta bsd-mailx

nano /etc/msmtprc

defaults
auth            on
tls             on
tls_trust_file  /etc/ssl/certs/ca-certificates.crt

aliases         /etc/aliases
syslog          on

# Sennymail
account         senny
host            smtp.1und1.de
port            587
maildomain      server.sennewald.net
user            [USER]@sennewald.info
password        [PASSWD]

auto_from       on
from            XXXXXXXX@sennewald.net
domain          sennewald.net

# Set a default account
account default : senny

chmod 600 /etc/msmtprc

nano /etc/aliases

root: [eMail-Ziel für Root-eMails]
default: [Default-Ziel für eMails]

newaliases

Testen echo „Inhalt der E-Mail“ | mail -s „Betreff“ test@mail.de