Protecting your website against attacks.

Date:

April 17, 2015


Category:

Web Development


Author:

Ashley Peck


No Comments

During the development and maintenance of websites today, various attacks and vulnerabilities must be considered to protect the vital information and functionality which lies within the web server. If left undefended, malicious users may exploit these in order to gain control and potentially cause irreparable damage to your website. This post is designed to highlight... Read More >>

Postfix: Blocking persistent SPAM senders (goodbye airtelbradband.in)

Date:

March 25, 2015


Category:

Linux Admin TipsSPAM


Author:

John Taylor


No Comments

At the moment about 90% of our SPAM is coming from India and China (The Russians seem to be on holiday). Of the Indian SPAM, the majority originates from airtelbroadband.in Like many ISPs Airtelbroadband don't seem  to care that they are being used to send spam. Sometimes our only recourse is to reject all emails... Read More >>

Fun with Find

Date:

March 5, 2015


Category:

Linux Admin Tips


Author:

John Taylor


No Comments

Find is a really useful tool. I must use it many times every day. Here are some useful examples: Finding all files matching find all directories in current folder $ find . -type d find all files: $ find . -type f Find all .php files $ find . -type f -name "*.php" Find all... Read More >>

Who’s trashing my web server ?

Date:

February 13, 2015


Category:

Linux Admin Tips


Author:

John Taylor


1 Comment

Do you ever find that your server performance has suddenly taken a nose dive ? One of the most common causes of this is a brute force attack on your web server. You can quickly determine if this is the case by using top or ps. It is often caused by a small number of... Read More >>

Microsoft Outlook 2000 Filters Guide

Date:

February 10, 2015


Category:

Email Client GuidesSPAM


Author:

Dean Taylor


No Comments

The J T Response email server uses Spam Assassin to mark messages likely to be spam. In this post we are going to explain how to set up your own personal filters on Microsoft Outlook  to move messages marked as SPAM to your junk folder. We used Microsoft Outlook 2000. If you have a different... Read More >>

Microsoft Outlook 2010 Filters Guide

Date:

January 27, 2015


Category:

Email Client GuidesSPAM


Author:

Dean Taylor


No Comments

The J T Response email server uses Spam Assassin to mark messages likely to be spam. In this post we are going to show how to set up your own personal filters on Microsoft Outlook 2010 to move messages marked as SPAM to your Junk folder. We used Microsoft Outlook 2010. If you have a... Read More >>

AHBL Blacklist Closed

Date:

January 27, 2015


Category:

Linux Admin TipsSPAM


Author:

John Taylor


No Comments

We use Spamassin and Amavis to keep control of spam being sent to our users. These use blacklist services to help determine if a message is a spam. The blacklists keep a list of servers that are known to regularly send SPAM. If the sending server gives a positive match on a black list it... Read More >>

Mac Mail Filters Guide

Date:

January 19, 2015


Category:

Email Client GuidesSPAM


Author:

Dean Taylor


No Comments

The J T Response email server uses Spam Assassin to mark messages likely top be spam. In this post we are going to explain how to set up your own personal filters on the Mac Mail App to move messages marked as SPAM to your Junk folder. We used Mail on Yosemite. If you have... Read More >>

Mozilla Thunderbird Filters Guide

Date:

January 15, 2015


Category:

Email Client Guides


Author:

Dean Taylor


No Comments

The J T Response email server uses Spam Assassin to mark messages likely top be spam. In this post we are going to explain how to set up your own personal filters on Mozilla Thunderbird to move messages marked as SPAM to your Junk folder. We used Thunderbird version 31.2. If you have a different... Read More >>

WHM: unable to login as root

Date:

January 12, 2015


Category:

Linux Admin Tips


Author:

John Taylor


1 Comment

If you have a problem logging into WHM as root, and get the following message: The login is invalid This could be because brute force protection is enabled and you are being blocked by the server. You can disable it as root from the command line as follows:  Get the process id's of any cphilkd... Read More >>