因為很多系統訊息需要透過 Mail 寄出, 目前透過 GMail 寄出信件是最容易不被當成垃圾信件
yum install postfix cyrus-sasl{,-plain}
: #relayhost = [an.ip.add.ress] relayhost = [smtp.gmail.com]:587 smtp_use_tls=yes # use sasl when authenticating to foreign SMTP servers smtp_sasl_auth_enable = yes # path to password map file smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd # list of CAs to trust when verifying server certificate smtp_tls_CAfile = /etc/pki/ca-trust/extracted/pem/email-ca-bundle.pem # eliminates default security options which are imcompatible with gmail smtp_sasl_security_options = noanonymous smtp_always_send_ehlo = yes # REJECTING UNKNOWN RELAY USERS :
[smtp.gmail.com]:587 username:password
postmap /etc/postfix/sasl_passwd
systemctl start postfix systemctl enable postfix
: Dec 10 13:43:39 ct-wiki postfix/pickup[4911]: 16FFD46459: uid=48 from=<apache> Dec 10 13:43:39 ct-wiki postfix/cleanup[4958]: 16FFD46459: message-id=<[email protected]> Dec 10 13:43:39 ct-wiki postfix/qmgr[4912]: 16FFD46459: from=<[email protected]>, size=2173, nrcpt=1 (queue active) Dec 10 13:43:41 ct-wiki postfix/smtp[4960]: 16FFD46459: to=<[email protected]>, relay=smtp.gmail.com[64.233.188.109]:587, delay=2.1, delays=0.03/0.01/0.98/1, dsn=2.0.0, status=sent (250 2.0.0 OK 1575956621 x4sm1408923pff.143 - gsmtp) Dec 10 13:43:41 ct-wiki postfix/qmgr[4912]: 16FFD46459: removed Dec 10 13:45:23 ct-wiki postfix/qmgr[4912]: B37DF462D8: from=<[email protected]>, size=2173, nrcpt=1 (queue active) Dec 10 13:45:24 ct-wiki postfix/smtp[4961]: B37DF462D8: to=<[email protected]>, relay=smtp.gmail.com[2404:6800:4008:c06::6d]:587, delay=546, delays=545/0.01/0.97/0.69, dsn=2.0.0, status=sent (250 2.0.0 OK 1575956724 200sm1420912pfz.121 - gsmtp) Dec 10 13:45:24 ct-wiki postfix/qmgr[4912]: B37DF462D8: removed