Tag Archives: Anti-Spam

If you followed my recent article on creating a CentOS 6.4 Email Gateway, you may encounter an issue with the with the Spam Report section with Spamassassin. The error is: ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists\#dnsbl-block for more information. After researching the error it turns out that because we use a…

Now we'll install MailWatch with the web GUI for MailScanner. Let's begin. Open Putty and enter: yum install php-gd php-mysql -y Edit the /etc/php.ini file and ensure each variable below is set with these values: short_open_tag = On safe_mode = Off register_globals = Off magic_quotes_gpc = On magic_quotes_runtime = Off session.auto_start = 0 Save and…

Now for the most complicated aspect of the whole exercise in my view - setting up MailWatch. Before commencing, if you're creating this within a VM I highly advise you take a snapshot of your system before starting. If you're doing this on physical hardware create an image of your current state using backup imaging…

Now we are going to install and configure our greylisting system. We are going to be using Postgrey, but there are numerous ones out there to choose from, I just find Postgrey simple to configure and manage. Greylisting I believe, will prevent more spam than any other anti-spam measure. It works on the simple principle…