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Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3)

Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3)

This howto will show you how to add ip restrictions to single mail accounts when using dovecot with MySQL.

This is especially useful if you need to access a mail account from only one single ip or a few ips or if you want to block specific ip addresses from accessing the mail account (e. g. due to spam abuse).

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Debian Wheezy)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Debian Wheezy)

This document describes how to install a Postfix mail server 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, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin, ClamAV, and SquirrelMail.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.3 x86_64)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.3 x86_64)

This document describes how to install a Postfix mail server 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, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 18 x86_64)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 18 x86_64)

This document describes how to install a Postfix mail server 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. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

The Perfect SpamSnake - Ubuntu Jeos 12.04 LTS Precise Pangolin

The Perfect SpamSnake - Ubuntu Jeos 12.04 LTS Precise Pangolin

This tutorial shows how to set up an Ubuntu Jeos based server as a spamfilter in Gateway mode. In the end, you will have a SpamSnake Gateway which will relay clean emails to your MTA. You will also be able to view your incoming queue, train your SpamSnake and carry out a few more advanced operations via Baruwa.

Set Up DKIM (DomainKeys Identified Mail) Working With Postfix On CentOS Using OpenDKIM

Set Up DKIM (DomainKeys Identified Mail) Working With Postfix On CentOS Using OpenDKIM

This tutorial shows how to get DKIM working on a CentOS box running Postfix using OpenDKIM, I'll also cover some simple trouble shooting tips and advice for future upgrade on your OpenDKIM installation.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 12.10)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 12.10)

This document describes how to install a Postfix mail server 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, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

Configure An Email Gateway With Scrollout F1 Anti-Spam & DLP

Configure An Email Gateway With Scrollout F1 Anti-Spam & DLP

An email gateway (a.k.a. firewall) is a machine (physical or virtual) installed between Internet and the email server. Its primary role is to protect the email server by filtering incoming messages, via SMTP protocol, from Internet. Secondary, an email gateway may be used as an outgoing gateway in case you want to add some new email features which are not provided by older email servers. For instance, Exchange 2000 or 2003 has no DKIM signing and verification service – a quality improvement for message delivery. This tutorial shows how to configure an email gateway with the Scrollout F1 email gateway.

Basic configuration covered by video tutorial.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 17 x86_64)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 17 x86_64)

This document describes how to install a Postfix mail server 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, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

Install Anti-Spam Firewall for any email server in 30 minutes

Install Anti-Spam Firewall for any server in 30 minutes

• Designed for Linux and Windows email system administrators, Scrollout F1 is a free anti-spam and  anti-virus email firewall (gateway) for multiple domains and email servers, with DLP for outgoing messages filtering Excel, Word, PDF and image files (archived or hidden). This document describes how to install Scrollout F1 from scratch, on a fresh Ubuntu Server or Debian. 

The installation is easy. Even if you are a newbie in Linux there is not much room for errors.

Estimated time: 30 minutes.
Includes a video tutorial as an alternative to this article.

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