Posts Tagged ‘spf’
Monday, March 9th, 2015
We have just completed a long series of articles discussing how attackers forge email messages and what technologies and techniques can be used to counter these attacks. See: Email Identity and Forged Email.
In this post, we will discuss some best practices when using LuxSci to maximize your protection against forged email messages.
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Tags: dkim, DMARC, email filtering, forged, spam filtering, spf, webmail
Posted in LuxSci Library: The Technical Side of Email
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Monday, January 26th, 2015
The Internet is rife with fake and forged email. Typically these are email messages that appear to be from a friend, relative, business acquaintance, or vendor that ask you to do something. If you trust that the message is really from this person, you are much more likely to take whatever action is requested — often to your detriment.
These are forms of social engineering — the “bad guys” trying to establish a trusted context so that you will give them information or perform actions that you otherwise would not or should not do.
Here we address some of the actions you can take to protect yourself from these attacks as best as possible. We’ll present these in the order of increasing complexity / technical difficulty.
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Tags: dkim, dns, email, fake, filtering, forged, html, phishing, read, social engineering, spam, spf
Posted in LuxSci Library: Security and Privacy, LuxSci Library: The Technical Side of Email
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Monday, September 8th, 2014
Many customers want to send millions of marketing messages within a short timeframe without getting blocked by recipient ISPs to maximize the number of recipients and the conversion rates on these messages.
This is a common scenario that we see, often from customers who have been using another costly provider, where delivery is sluggish or where messages are blacklisted or greylisted by their recipient’s systems.
Here we will share our standard prescription for solving this delivery dilemma once and for all. There are multiple factors involved, each of which will contribute to success.
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Tags: dedicated server, deliverability, dkim, email marketing, high volume, ip addrees, pre-warmed ip, spf
Posted in Case Studies, Email Marketing
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Friday, October 11th, 2013
DNS (Domain Name Service) is as fundamental to email and web services as address books and published street addresses and phone numbers are to other types of communications. Without them, it is difficult to connect with new people and organizations and it is even inconvenient to communicate with your friends and family.
In this article, we cover the basic concepts involved in Domain Name Service (DNS) and domain registration, so that you can understand how they are involved in email and web hosting services.
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Tags: dkim, dns, dns settings, domain, domain name service, easydns, mail exchange, propagation, registration, spf, sumdomain, time-to-live, ttl, txt, whois
Posted in LuxSci Library: The Technical Side of Email
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Tuesday, September 24th, 2013
So, you’re minding your own business, going about your daily tasks, checking your email, and suddenly your INBOX is flooded with a series of non-delivery reports (aka NDRs or bounce messages). But wait just a minute, you didn’t send these. How did this happen? Did someone steal your email address? How is that possible?
What has most likely happened here is that you’ve fallen victim to “backscatter“, or as it’s commonly known, bounce-back spam. As spam-detection techniques have evolved and become more accurate, the spammers have been forced to devise increasingly complicated and devious methods of getting their messages delivered. For example: email forgery.
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Tags: backscatter, bounce, bounce message, catch-all, challenge response, dkim, domain keys, email alias, email forgery, mailer daemon, NDR, sender policy framework, spam, spf
Posted in LuxSci Library: The Technical Side of Email
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