CentOS 7 – Install Postfix to configure SMTP server

If Postfix is not, install it by using this command

yum install postfix

Edit the file:

vi /etc/postfix/main.cf

myhostname = smtp.hanneng.net
mydomain = hanneng.net
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mynetworks = 127.0.0.0/8, 10.0.0.0/24
home_mailbox = Maildir/
smtpd_banner = $myhostname ESMTP

# limit an email size for 10M
message_size_limit = 10485760
# limit a mailbox for 1G
mailbox_size_limit = 1073741824
# for SMTP-Auth
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
smtpd_recipient_restrictions = permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject

Restart postfix

systemctl restart postfix
systemctl enable postfix

Posted in Linux Tagged with:

Leave a Reply