Category Archives: Hints & Tips

Stop Email Fraud with SPF, DKIM, and DMARC (PART I)

What is SPF The Sender Policy Framework (SPF) is a method of fighting spam by preventing fraudsters using legitimate email addresses to send spam or other fraudulent emails. An SPF record is essentially a TXT record that allows you to specify which servers can send emails on your behalf and helps prevent these emails from getting caught in recipients’ spam… Read More »

Squid proxy and custom URL filtering

A proxy server, is a computer/appliance that acts as a gateway between a local network (e.g., all the computers at one company or in one building) and a larger-scale network such as the Internet. There are great benefits of using a proxy server such as the ability to hide the IP address of the client computer so that it can surf… Read More »