Debian nullmailer
mouse 269 · person cloud · link
Last update
2023-08-13
2023
08-13
«uninstall exim and install a simple forwarder daemon»
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apt install nullmailer

cd /etc/nullmailer
echo -n             > defaultdomain
echo receiver@a.com > adminaddr
echo sender@b.com   > allmailfrom 
echo 'server.net smtp --port 587 --auth-login --user=username --pass=password' > remotes

systemctl restart nullmailer

Source: debian wiki