Sender Policy Framework is an email authentication protocol that allows a domain owner to publish an SPF record corresponding to their name. This SPF record includes a list of IP addresses and mail servers that the domain owner officially authorizes to be used for sending emails from. When the email reaches the recipient’s server, it…
Email authentication, a crucial practice in today’s digital world, is the process of verifying the true identity of an email sender. By implementing robust protocols, domain administrators and business owners can effectively combat phishing and spoofing attacks that often exploit their brand identity. SPF or Sender Policy Framework, is one of the oldest email authentication…
Have you ever come across a URL that seems legitimate at first glance, yet there is something fishy about it? In most cases, if you look closely, you will notice something slightly strange about these websites, perhaps a character that doesn’t quite fit or a slight variation in the spelling. This is a classic case…
During the tax season, cybercriminals impersonate IRS officials and call taxpayers, scarring them into taking desperate and hasty action. If you fall victim to their tactics, you could potentially lose a significant amount of money or even face legal consequences. They might request your financial details to redirect the tax rebate to their account or…
For network administrators, understanding DNS packet fragmentation is crucial. When a DNS response packet is large and unable to fit within the MTU size, it’s divided into smaller fragments. MTU, or the maximum transmission unit, is the largest size of a packet or frame that can be sent across a data link. This process affects…
Imagine a situation where all your well-crafted emails land in your audience’s inbox, and they actively engage with them! Sounds like every marketer’s dream, right? As much as we would want this to become a reality, it is not! Although we understand that achieving 100% email deliverability is far-fetched or rather impossible, this doesn’t mean…
As per RFC 7208, all SPF records should not be more than 255 characters long. This includes the characters in the SPF record itself as well as any DNS name expanded within it. If your SPF record exceeds this limit, there will be parsing issues and DNS lookup failures, impeding the email authentication process. So,…
If your domain is already protected with the Sender Policy Framework (SPF) and you regularly update and monitor your SPF records, then we are sure you must be aware of the SPF lookup limit. But do you know how to get rid of this problem and stay within the lookup limit to avoid invalidation of…
SPF helps recipients’ mailboxes verify the authenticity of senders’ domains by referring to their predefined policies. To do this, the receiving server retrieves the SPF record linked to the sender’s domain. A standard SPF record consists of one or more mechanisms (like ip4, ip6, include, mx, etc.) that specify which IP addresses and domains are…
Are you also tempted to take care of the Sender Policy Framework (SPF) on your own? Do you also feel it’s an easy task and you don’t need to onboard an email authentication expert or outsource the work to a cybersecurity agency? Well, there are many business owners like you, but there are several reasons…
