Postfix¶

Installation¶

aptitude install postfix

Configurations¶

Relay SMTP¶

Edit /etc/postfix/main.cf

relayhost = [smtp.domain.tld]:587
smtp_use_tls=yes
smtp_sasl_auth_enable = yes 
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtp_sasl_security_options =

Create /etc/postfix/sasl_passwd

[smtp.domain.tld]:587  username:password

Update postfix lookup table

postmap /etc/postfix/sasl_passwd

Make sur /etc/postfix/sasl_passwd.db is owned by postfix

chown postfix /etc/postfix/sasl_passwd.db

Reload Postfix

service postfix reload

Change default root mail : http://anandarajpandey.com/2014/09/10/how-to-change-default-root-email-address-linux-postfix-centos/

Errors¶

SASL authentication failed; cannot authenticate to server server.domain.tld[xxx.xxx.xxx.xxx]: no mechanism available

Install libsasl2-modules, restart postfix