1. Setup Postfix Mail Server
2. Postfix Configuration File Plesk Server Settings
3. Postfix Configuration File Plesk Server Requirements

DKIM configuration for Postfix & Plesk. The public key is available on a DNS entry of the sender domain zone and the private key used to generate this signature is stored on the mail server. This post will show how to configure DKIM on a Debian server with Postfix and automatize the configuration with Plesk. I assume you have sufficient permission to run these commands. In my ongoing quest to try out alternate MTA/anti-spam on plesk, here is a guide to amavisd-new + postfix + spamassassin + clamav. Wrote this mainly for my own reference, but guess others may find it interesting/useful. How to Setup an Email Server on CentOS 7. In this tutorial we are going to learn how to set up an Email server using Postfix, Dovecot and Squirrelmail on CentOS 7.x. We will be using Postfix for SMTP (Simple Mail Transfer Protocol), Dovecot for POP/IMAP and Squirrelmail as webmail client to send or receive emails.

Just found the solution by myself: Symptoms When trying to send email using Roundcube, an error occurs: SMTP Error (250): Authentication failed When connecting via telnet, following output is displayed: # telnet domain.tld 25 Trying 91.204.25.4. Connected to domain.tld. Escape character is '^]'. 220 domain.tld ESMTP Postfix helo l 250 domain.tld auth login 503 5.5.1 Error: authentication not enabled Mail server does not return authentication mechanisms list: # telnet 1.2.3.4 25 Trying 1.2.3.4. Connected to 1.2.3.4 Escape character is '^]'.

Setup Postfix Mail Server

220 host.tld ESMTP Postfix ehlo parallels.com 250-host.tld 250-PIPELINING 250-SIZE 20480000 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Cause Postfix misconfiguration. Resolution Check Postfix configuration file at /etc/postfix/main.cf. Comment thee following lines which are responsible for preventing plain text passwords and forcing SMTP connection over SSL or TLS #smtpd_sasl_security_options = noplaintext #smtpd_tls_auth_only = yes.

Postfix Configuration File Plesk Server Settings

Block outgoing email of a domain in Plesk – Postfix This post explains how to Block outgoing email of a domain in Plesk using Postfix mail server. First, you need to create a file “ /etc/postfix/recipient” using your favorite editor. I am using vim editor here. To know more about vi editor, please click vim /etc/postfix/recipient Then add the following into it. Frank zappa live at carnegie hall torrent.

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Postfix Configuration File Plesk Server Requirements

Spam-receiver1@domain1.com REJECT spam-receiver2@domain2.com REJECT Please change domain1.com and domain2.com with the desired domain names. Edit Postfix configuration file and search for “ smtpd_recipient_restrictions =“.

Add “ check_recipient_access hash:/etc/postfix/recipient” in the biginning of the string. Smtpd_recipient_restrictions = check_recipient_access hash:/etc/postfix/recipient, permit_mynetworks. Restart Postfix service.

Service postfix restart Run the following command to verify there is no issue with the hash-file creation.