title: “Relayhost with authentication”
date: 2016-08-18T15:11:43
slug: relayhost-with-authentication

vi /etc/postfix/sender\_relay
support@domainvalley.de [smtprelaypool.ispgateway.de]

vi /etc/postfix/sasl\_passwd
@domainvalley.de support@domainvalley.de:PASSWORD

postmap /etc/postfix/sender\_relay
postmap /etc/postfix/sasl\_passwd

/etc/postfix/main.cf

smtp\_sender\_dependent\_authentication = yes
sender\_dependent\_relayhost\_maps = hash:/etc/postfix/sender\_relay
smtp\_sasl\_password\_maps=hash:/etc/postfix/sasl\_passwd
smtp\_sasl\_auth\_enable=yes
smtp\_sasl\_security\_options = noanonymous