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Search results for Postfix with dkfilter (DomainKeys Implementation)

Linux

Postfix with dkfilter (DomainKeys Implementation)

Post date: December 7, 2006, 21:12 Category: Security Views: 4014 Comments
Tutorial quote: 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 shows step-by-step how to install dkfilter for Postfix to deploy DomainKeys signing and verification.
CentOS

How To Implement Domainkeys In Postfix Using dk-milter

Post date: February 5, 2008, 12:02 Category: Network Views: 5636 Comments
Tutorial quote: Domainkeys is "a method of e-mail authentication. Unlike some other methods, it offers almost end-to-end integrity from a signing to a verifying Mail Transfer Agent (MTA). In most cases the signing MTA acts on behalf of the sender, and the verifying MTA on behalf of the receiver. DomainKeys is specified in Historic RFC 4870, which is obsoleted by Standards Track RFC 4871, DomainKeys Identified Mail (DKIM) Signatures." according to the wikipedia. So why a how to on it when there is DKIM? Well domainkeys is still actively being used and is more widely deployed than DKIM, the developer Yahoo still uses it to sign and verify mail although they are contributers to the DKIM standard.
CentOS

Virtual Hosting Howto With Virtualmin On CentOS 5.1

Post date: March 4, 2008, 11:03 Category: Installing Views: 5172 Comments
Tutorial quote: This tutorial shows how to set up a CentOS 5.x server to offer all services needed by virtual web hosters. These include web hosting, smtp server with (SMTP-AUTH and TLS, SPF, DKIM, Domainkeys), DNS, FTP, MySQL, POP3/IMAP, Firewall, Webalizer for stats.
Linux

How To Implement SPF In Postfix

Post date: February 25, 2007, 21:02 Category: Miscellaneous Views: 4588 Comments
Tutorial quote: This tutorial shows how to implement SPF (Sender Policy Framework) in a Postfix 2.x installation. The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery. There are lots of SPF extensions and patches available for Postfix, but most require that you recompile Postfix. Therefore we will install the postfix-policyd-spf-perl package from openspf.org which is a Perl package and can be implemented in existing Postfix installations (no Postfix compilation required).
Debian

Postfix Monitoring With Mailgraph And pflogsumm

Post date: July 16, 2006, 16:07 Category: Miscellaneous Views: 3727 Comments
Tutorial quote: This article describes how you can monitor your Postfix mailserver with the tools Mailgraph and pflogsumm. Mailgraph creates daily, weekly, monthly, and yearly graphs of sent, received, bounced, and rejected emails and also of spam and viruses, if SpamAssassin and ClamAV are integrated into Postfix. These graphs can be accessed with a browser, whereas pflogsumm ("Postfix Log Entry Summarizer") can be used to send reports of Postfix activity per email.
Debian

Postfix Monitoring With Mailgraph And pflogsumm On Debian Etch

Post date: June 26, 2007, 23:06 Category: Miscellaneous Views: 3711 Comments
Tutorial quote: This article describes how you can monitor your Postfix mailserver with the tools Mailgraph and pflogsumm. Mailgraph creates daily, weekly, monthly, and yearly graphs of sent, received, bounced, and rejected emails and also of spam and viruses, if SpamAssassin and ClamAV are integrated into Postfix (e.g. using amavisd-new). These graphs can be accessed with a browser, whereas pflogsumm (Postfix Log Entry Summarizer) can be used to send reports of Postfix activity per email.
Debian

Postfix Monitoring With Mailgraph And pflogsumm On Debian Lenny

Post date: June 15, 2010, 11:06 Category: Miscellaneous Views: 2630 Comments
Tutorial quote: This article describes how you can monitor your Postfix mailserver with the tools Mailgraph and pflogsumm. Mailgraph creates daily, weekly, monthly, and yearly graphs of sent, received, bounced, and rejected emails and also of spam and viruses, if SpamAssassin and ClamAV are integrated into Postfix (e.g. using amavisd-new). These graphs can be accessed with a browser, whereas pflogsumm ("Postfix Log Entry Summarizer") can be used to send reports of Postfix activity per email.
Unix+clones

Postfix performance tuning

Post date: May 21, 2005, 11:05 Category: Optimizing Views: 3401 Comments
Tutorial quote: Postfix is fast out of the box, but like other packages, you can usually tune it to work even faster. Furthermore, there are situations where Postfix may not perform as well as you expected, whether because of hardware or software limitations on the server system or other adverse conditions, such as a big influx of spam or undeliverable mail. This article shows you how to find and analyze the most common performance problems.
Fedora

Virtual Users And Domains With Postfix, Courier And MySQL (Fedora 8)

Post date: November 20, 2007, 10:11 Category: Installing Views: 3304 Comments
Tutorial quote: 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 will 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 (quota is not built into Postfix by default, I will show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses.
Ubuntu

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 7.10)

Post date: November 25, 2007, 10:11 Category: Installing Views: 3001 Comments
Tutorial quote: 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 will 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 (quota is not built into Postfix by default, I will show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). 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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