mailq less /var/log/mail.log postsuper -d ALL postsuper -d <ID> systemctl restart postfix
apt update apt install postfix apt install postfix libsasl2-modules # relay mit smtp auth
/etc/postfix/main.cf
sender_canonical_maps = hash:/etc/postfix/sender_canonical
/etc/postfix/sender_canonical
root root@host.example.org
chmod 600 /etc/postfix/sender_canonical postmap /etc/postfix/sender_canonical
If not already installed:
apt install libsasl2-modules
/etc/postfix/main.cf
relayhost = [smtp.example.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/relay_pass smtp_sasl_security_options = noanonymous smtp_use_tls=yes smtp_tls_security_level = encrypt
/etc/postfix/relay_pass
[smtp.example.com]:587 user@example.com:password
chmod 600 /etc/postfix/relay_pass postmap /etc/postfix/relay_pass
apt install mailutils
echo "Test" | mail -s "Test mx01" test@example.com
openssl s_client -connect mx01.example.org:587 -starttls smtp