Schubert-WIKI

apt install postfix mailutils libsasl2-modules

/etc/postfix/main.cf

# See /usr/share/postfix/main.cf.dist for a commented, more complete version
 
 
# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
 
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
 
# appending .domain is the MUA's job.
append_dot_mydomain = no
 
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
 
readme_directory = no
 
# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2
 
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_use_sasl = yes
 
sender_canonical_maps = hash:/etc/postfix/sender_canonical
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
 
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
 
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = aps.schubert.home
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, aps.schubert.home, localhost.schubert.home, localhost
relayhost = smtp.1und1.de:587
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all

/etc/postfix/sasl_passwd

smtp.1und1.de noc@schubert-waltringen.de:siehe_KeePass

/etc/postfix/sender_canonical

root noc@schubert-waltringen.de
chef noc@schubert-waltringen.de
nagios noc@schubert-waltringen.de

chown root. /etc/postfix/sasl_passwd
chmod 600 /etc/postfix/sasl_passwd

sudo postmap /etc/postfix/sasl_passwd
sudo postmap /etc/postfix/sender_canonical

echo 'testOK' | mail -s 'Testmail' markus@schubert-waltringen.de