Linux Tutorials on the topic “postfix”
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Virtual Users And Domains With Postfix, Courier And MySQL (+ SMTP-AUTH, Quota, SpamAssassin, ClamAV)
Author: Falko Timme •
Tags: anti-spam/virus, 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: anti-spam/virus, 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: postfix, anti-spam/virus • Comments: 5Mandriva 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: anti-spam/virus, postfix • Comments: 18Postfix 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, anti-spam/virus • Comments: 10How 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: 0How 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 •
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 •
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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I cannot send and/or receive emails.
Author: till •
Tags: postfix, sendmail, ispconfig •
Comments: 0 Please check if Sendmail/Postfix and your POP3 daemon are running by executing netstat -tap You will get a list of all services listening on your server. If they are running re-configure your firewall (iptables or ipchains) so that the ports 25 (Sendmail/Postfix) and 110 (POP3) are not blocked. If this does not help please check that Sendmail/Postfix is really running on port 25 and your POP3 daemon on port 110. (Hint for standard RedHat installations: If you have webmin installed and are running Sendmail, go to Webmin->Servers->Sendmail->Sendmail Options. Under SMTP Port Options you often find the following entry:
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One of the users on the system has a CatchAll-email address. He receives all emails, even those for users of another site...
Author: till •
Tags: postfix, ispconfig •
Comments: 0 One of the users on the system has a CatchAll-email address. He receives all emails, even those intended for users of another site on the same server. The MTA on the server is postfix. Please check if the domain of the users that receives all emails is the same as the domain $mydomain in /etc/postfix/main.cf. If this is the case, change $mydomain and run postfix reload on the shell. You should never enter a domain that is used for a virtual site on the server as $mydomain in /etc/postfix/main.cf!
