Jul 31 11:18:41 myhostname postfix/smtpd: disconnect from Jul 31 11:18:40 myhostname postfix/smtpd: NOQUEUE: reject: RCPT from : 454 4.7.1 : Relay access denied from= to= proto=ESMTP helo= My initial error: Relay access denied from the file /var/log/maillog: Jul 31 11:18:40 myhostname postfix/smtpd: connect from Postfix receive email from outside not working.Postfix Basic Configuration (Excellent article!).Fixing 'Relay access denied' in Postfix.I've tried many things but haven't been able to figure it out by myself, so I am looking for some help. I am able to send out emails but I am not receiving emails. If this is OK for you, you can go this way and save time and server resources.Īdd this to your /etc/dovecot/conf.d/10−master.For some reason my Postfix mail server running on CentOS 7 stopped working recently, maybe because I updated the modules through Webmin, I don't know. So all your IMAP users will be enabled to send email trough your SMTP. So it is simplier.īut it has the disadvantage you cannot easilly separate IMAP and SMTP users. This method doesn’t require the installation of external modules. SECOND METHOD: use dovecot to authenticate postfix Smtpd_sasl_security_options = noanonymousĭon’t forget to enable and start saslauthd service: Smtpd_tls_cert_file = /etc/pki/tls/certs/postfix.crt

Openssl x509 -req -days 3650 -in postfix.csr -signkey ca.key -out postfix.crtĪdding the following lines to your /etc/postfix/main.cf should complete your configuration. Now you can get your self-signed certificate signing your request: Openssl req -new -key ca.key -out postfix.csr

Now generate your CSR (certificate request).Īnswer to all questions and press return (no password) to create it Otherwise you can build a self-signed certificate this way: generate your key For a production server it is adviceable to purchase one. Sql_select: select password from users where username = '%u' Yum install cyrus−sasl cyrus−sasl−devel cyrus−sasl−plain cyrus−sasl−sql Now we have to install the following packages in order to enable sasl2 authentication:Ĭyrus-sasl cyrus-sasl-devel cyrus-sasl-plain cyrus-sasl-sql: In the previuos part we have alredy setup database and tables.įIRST METHOD: CYRUS-SASL AUTH (saslauthd daemon) In this article we will configure our server for authenticated smtp.

Smtp relay centos 7