Go back to fronty page View most popular entries View latest additions Submit tutorials to UnixTutorials.info
UnixTutorials logo

Search results for Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy)

CentOS

How To Implement Domainkeys In Postfix Using dk-milter

Post date: February 5, 2008, 12:02 Category: Network Views: 6704 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.
Unix+clones

SSH Port Forwarding Through a Proxy Server

Post date: April 18, 2005, 03:04 Category: Network Views: 3279 Comments
Tutorial quote: A common use of SSH is port forwarding (tunneling). This use causes traffic directed to a particular port to be sent to a specified port on another computer. Because traffic is sent through SSH, the traffic is encrypted, allowing the transmission of sensitive data through arbitrary services.
Debian

HELO restrictions for Exim4

Post date: June 16, 2006, 22:06 Category: Security Views: 3516 Comments
Tutorial quote: One thing that I've noticed on my mailserver in recent months has been a large number of spam mails which identify themselves as being sent from my own IP address. Since they never are blocking them is a useful thing to do before any more intensive filtering is done.
Debian

Updating multiple machines on low bandwidth

Post date: June 16, 2006, 21:06 Category: Network Views: 3645 Comments
Tutorial quote: There are situations where it is common to want to update multiple machines running Debian GNU/Linux whilst minimizing the bandwidth used for downloading packages and updates. There are several different solutions for this problem and here we'll look at one of them: apt-proxy.
Ubuntu

Howto install Cherokee web server with MySQL, PHP support on Jaunty

Post date: July 23, 2009, 21:07 Category: Software Views: 3394 Comments
Tutorial quote: Cherokee is a very fast, flexible and easy to configure Web Server. It supports the widespread technologies nowadays: FastCGI, SCGI, PHP, CGI, SSI, TLS and SSL encrypted connections, Virtual hosts, Authentication, on the
fly encoding, Load Balancing, Apache compatible log files, Data Base Balancing, Reverse HTTP Proxy, Traffic Shaper,
Video Streaming and much more.

Zentyal

Zentyal As A Gateway: The Perfect Setup

Post date: May 26, 2011, 10:05 Category: Installing Views: 6412 Comments
Tutorial quote: Zentyal is a Linux Small Business Server, it lets you manage all your network services through one single platform. It's a Network Gateway, as well as an Infrastructure, UTM (Unified Threat Manager), Office and Communications Server. All these features are fully integrated and easy to configure, it truly helps to save system administrators time. In this tutorial you will see how to set up a Zentyal Server to act as a gateway in a very common scenario. Zentyal will provide basic network infrastructure, load balancing between two Internet providers, firewall and HTTP proxy caching and content filtering.
Linux

Automatically Forward Your Local Mail

Post date: August 6, 2007, 15:08 Category: System Views: 3806 Comments
Tutorial quote: Forward mail sent to your local root account to your real email address.
FreeBSD

How I created my own .mac replacement

Post date: February 7, 2006, 21:02 Category: Network Views: 4300 Comments
Tutorial quote: My .mac subscription is 60 days from renewal so I have to ask myself, "how useful is .mac to me?

Is .mac worth it to me? Many of the reasons I don't find .mac useful are the same reasons I encourage others to use .mac. One has to keep in mind that I'm not an "average" computer user. My needs are different and Apple wouldn't make any money trying to sell a .mac like service to guys like me. This is not an "I hate .mac" site but rather an explanation of the motivation and methods I used to provide myself with comparable services that are more usable to me. I publish it so that others may benefit from what I have learned.

This is published to help others, but don't expect free support from the author. Support requests that arrive without monetary compensation for my time will almost certainly be ignored. Instead, try using the support forums and maybe someone will help you out.

To understand why I did this, you might want to read about my use of .mac services.

Project Goals:

Retain the useful features: Regardless of whether or not I renew my subscription, I want to retain the features I have found most useful (iDisk, iSync (between computers), iCal sharing, and Backup).

Enhance the useful features: Simply retaining the useful features would be an utter failure. The most value can be found in addressing the shortcomings of each feature. For iDisk, speed and disk space are the impediments to it's usefulness. iSync already works quite well. iCal sharing works well but publish and subscribe updates are sloooow. Backup is hamstrung by the iDisk space issue.
CentOS

Serving CGI Scripts With Nginx On CentOS 6.0

Post date: October 23, 2011, 09:10 Category: Miscellaneous Views: 21750 Comments
Tutorial quote: This tutorial shows how you can serve CGI scripts (Perl scripts) with nginx on CentOS 6.0. While nginx itself does not serve CGI, there are several ways to work around this. I will outline two solutions: the first is to proxy requests for CGI scripts to Thttpd, a small web server that has CGI support, while the second solution uses a CGI wrapper to serve CGI scripts.
Solaris

Configuring Sendmail

Post date: April 13, 2005, 03:04 Category: Network Views: 4815 Comments
Tutorial quote: Sendmail has the reputation of having the most hideous configuration file in the history of mankind. It's extremely long and incredibly cryptic. However, it is this very complexity that has made it the most popular MTA (Mail Transport Agent) on the Internet. Its' flexibility allows sendmail to handle the most demanding, disjointed mail routing and serving configurations you can dream up.
Web-based applications and online marketing solutions - LumoLink