We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Sender ID?

Mary McMahon
By
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Sender ID is a method developed by researchers at Microsoft for verifying the sender of an email communication. This is one among a number of tactics developed by various working groups for addressing issues like spam, phishing, and ethically dubious uses of email systems. The framework is similar to sender policy framework (SPF), although it works slightly differently, focusing on different aspects of an email to verify the sender's identity.

Under sender ID, when email arrives on a server for someone, the server looks up the originating information in the headers and then checks with a domain name server (DNS) to see if the stated identification of the sender matches the server data. If an email purporting to come from exampleemailservice.com resolves to a different server, the sender ID system knows that the email is trying to spoof the recipient, tricking the person into thinking it comes from one place when it's actually from another.

The system will flag emails with originations that do not match the claims made in their headers. These can be deleted, bounced back to the sender, sent to a spam trap, or quarantined. The sender ID system can be configured in the way that best suits the needs of the users. Some users want to know what kinds of email are being flagged, while others may want people attempting to spoof them to know that the emails are not getting through.

The disadvantage to sender ID is that if records are outdated or erroneous, as can happen, email may be trapped in the system when it is actually legitimate. It can take up to 48 hours for changes of information to propagate across the DNS system. Someone might, for example, move a domain to a new host and then email a friend. The email would be caught by the sender ID authentication because it wouldn't match the existing record the system finds, even though it is genuine.

As with other measures designed to increase email and computer security, sender ID has strengths and weaknesses. People interested in facilitating spoofing, spamming, and similar activities with email can work to develop workarounds and exploits to take advantage of the holes they find in such security frameworks. For this reason, security experts recommend creating layers of security. If a malicious email slips through sender ID, for example, it might be caught by an antivirus program and sent to quarantine before someone opens it and infects the system.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a EasyTechJunkie researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.