sudo apt-get update && sudo apt-get install ssmtp mailutils
apt-get purge mailutils
sudo nano /etc/ssmtp/ssmtp.conf


#root=postmaster
mailhub=mx2e9f.netcup.net:587
#mx2e9f.netcup.net:994
#smtp.gmail.com:587
#hostname=raspberrypi
FromLineOverride=YES
AuthUser=me@yaca.de
AuthPass=$neinyaca2020
UseSTARTTLS=YES


root=postmaster
mailhub=smtp.gmail.com:465
587
hostname=raspberrypi
FromLineOverride=YES
AuthUser=EMAILADRESSE@gmail.com
AuthPass=$neinyaca2020
UseSTARTTLS=YES
-------------------*******
#root=postmaster
mailhub=mx2e9f.netcup.net:587

#mx2e9f.netcup.net:994
#smtp.gmail.com:587
#hostname=raspberrypi
FromLineOverride=YES
AuthUser=me@yaca.de
AuthPass=$neinyaca2020
UseSTARTTLS=YES