Linux Tutorials on the topic “postfix”

• Postfix with dkfilter (DomainKeys Implementation)

  Author: sohaileo • Tags: antivirus, postfix • Comments: 5

  Postfix with dkfilter (DomainKeys Implementation) DomainKeys is an anti-spam software application in development at Yahoo that uses a form of public key cryptography to authenticate the sender's domain. dkfilter is an SMTP-proxy designed for Postfix. It implements DomainKeys message signing and verification. It comprises two separate filters, an "outbound" filter for signing outgoing email on port 587, and an "inbound" filter for verifying signatures of incoming email on port 25. This document is to describe step by step how to install dkfilter for postfix to deploy domainkeys signing and verification.

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• Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy)

  Author: ovis • Tags: antivirus, postfix • Comments: 7

  Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy) ASSP stands for Anti-Spam SMTP Proxy. The ASSP server project is an Open Source platform-independent transparent SMTP proxy server that leverages numerous methodologies and technologies to both rigidly and adaptively identify spam. In short ASSP is the most kickass solution that is both free and works great. It reduced spam to an absurd minimum for me.

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• Virtual Users And Domains With Postfix, Courier And MySQL (+ SMTP-AUTH, Quota, SpamAssassin, ClamAV)

  Author: Falko Timme • Tags: antivirus, debian, postfix • Comments: 71

  Virtual Users And Domains With Postfix, Courier And MySQL (+ SMTP-AUTH, Quota, SpamAssassin, ClamAV) This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses.

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• Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5)

  Author: Falko Timme • Tags: antivirus, fedora, postfix • Comments: 10

  Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5) This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses.

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• Mandriva 2005 Postfix Anti-Spam, Anti-Virus Relay Server for Exchange Server 2000/2003

  Author: deeztech • Tags: antivirus, postfix • Comments: 5

  Mandriva 2005 Postfix Anti-Spam, Anti-Virus Relay Server for Exchange Server 2000/2003 There are a couple of linux how-tos floating on the Internet that deal with this very subject. As a matter of fact, those guides are what inspired to write this one. In the spirit of keeping it simple, let me recommend the Mandrake or as it’s currently known Mandriva Linux distro. This guide has been written with this distro in mind.

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• Postfix Spam Filter using Ubuntu Dapper, MailScanner, SpamAssassin, Razor, Pyzor, DCC and ClamAV

  Author: fdalmoro • Tags: antivirus, postfix • Comments: 18

  Postfix Spam Filter using Ubuntu Dapper, MailScanner, SpamAssassin, Rayzor, Pyzor, DCC and ClamAV This is a similar version of the HOWTO that can be found here: http://www200.pair.com/mecham/spam/spamfilter20050628.html. Except for using Ubuntu Server instead of Debian and MailScanner instead of Amavisd, the Postfix, Rayzor, Pyzor, DCC and ClamAV sections are almost the same.

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• How To Fight Spam Using Your Postfix Configuration

  Author: todgerme • Tags: postfix, antivirus • Comments: 11

  How To Fight Spam Using Your Postfix Configuration In this guide you will learn how to tweak the mail guide for  Postfix (+Auth SMTP + Quota), http://www.howtoforge.com/virtual_postfix_mysql_quota_courier, setup to better combat SPAM and allow a little bit of backward compatibilty of the older Qmail systems.

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• How To Combat Viruses Using Your Postfix Configuration

  Author: todgerme • Tags: postfix • Comments: 0

  How To Combat Viruses Using Your Postfix Configuration In this guide you will learn how to tweak the HowtoForge mail guide for  Postfix (+Auth SMTP + Quota), http://www.howtoforge.com/virtual_postfix_mysql_quota_courier, setup to give better Virus protection.  Sadly this always comes at a price as you will see later on.....

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• On sending emails, I get the following error message: "Relaying denied".

  Author: Till Brehm • Tags: postfix, sendmail • Comments: 0

  There are two solutions for this problem: 1) You configure your MTA to allow authentication via SMTP (SMTP-Auth). Your users then have to change settings in their email clients (e.g. Outlook), i.e., they have to activate Server requires authentication. 2) You install "POP-before-SMTP" or poprelayd on your server. Your users then have to fetch emails first before they are allowed to send emails for a restricted period of time (mostly 30 min.).

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• How do I configure Postfix to use SMTP-Auth?

  Author: Till Brehm • Tags: postfix • Comments: 0

  Some useful links: http://www.thecabal.org/~devin/postfix/smtp-auth.txt http://www.mandrakesecure.net/en/docs/postfix-sasl.php http://postfix.state-of-mind.de/patrick.koetter/smtpauth/index.html http://www.howtoforge.com/perfect_setup_debian_sarge http://www.howtoforge.com/howto_postfix_smtp_auth_tls_howto

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