Posts Tagged ‘dkim’
Wednesday, January 21st, 2015
The scope and frequency of cyber attacks, data breaches, information disclosures, and the sophistication of the tools used to attack companies and individuals has been increasing at a tremendous rate.
It doesn’t strain our memories to come up with numerous prime examples including the deliberate corporate penetration of Sony (which was “easy”) and of Sands Casino (presumably very hard); or the exposure of super-powerful nation state sponsored attack software Regin that helps enable penetration of specific, complex targets. Don’t forget as well, the numerous phishing attacks that were propagated in 2014. And, perhaps just as infamous, the social engineering attacks in which malicious individuals tricked Apple and GoDaddy into revealing sensitive information.
All of these are different attack vectors, with different ultimate purposes, targeting individuals or corporations. All were successful. And the actual, complete list would be too large to publish (and would be impossible to know as more than half of data breaches go unnoticed).
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Tags: attack, dkim, email, email identity, forged, identity, identity theft, jedi mind trick, phishing, regin, spear phishing, spf
Posted in LuxSci Library: Security and Privacy
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Monday, September 8th, 2014
You need to send millions of messages to your large opt-in mailing list over the upcoming holiday season. You need these messages to go out pretty quickly and to not get blocked by your recipient ISPs so that the maximum number of your (potential) customers get your marketing messages and thus you can maximize your conversion rates on these messages.
This is a common scenario that we see, often from customers who have been using another provider that is excessively expensive, where delivery is sluggish, and/or where their messages are getting blacklisted or grey listed by their recipient’s systems.
Here we will share with you our standard prescription for solving this delivery dilemma once and for all. There are multiple important factors involved, each of which will contribute to your 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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Monday, August 18th, 2014
The popularity and prevalence of DKIM in the fight against SPAM is growing such that as of August, 2014, 47% of the most popular domains in the USA are DKIM-enabled (reference); globally, that number is 38%. The trend is steadily upward and we expect DKIM use to be pervasive within a few more years.
DKIM, Domain Keys Identified Mail, is still a magic techno-jargon black box to most people. It’s “something” you gotta “add to DNS” to help stop SPAM or make your email “appear more legitimate”. Beyond that (and even what DNS actually is) … many people are stumbling to know what is going on.
Here are 7 misconceptions about DKIM that we have seen, and the explanations that can steer you back on track:
1. DKIM stops SPAM
Many folks believe that enabling DKIM for their domain and DKIM filtering for their inbound email will stop SPAM from reaching them. Certainly using DKIM filtering on your inbound email will cut down on SPAM and using DKIM for messages sent by you can help others verify your email is legitimate; however, it does not actually stop spam. In fact, it can make some SPAM look more legitimate.
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Tags: dkim, email, forged, phishing
Posted in LuxSci Library: Security and Privacy
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Friday, October 11th, 2013
DNS (Domain Name Services) are 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 Services (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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Tuesday, August 21st, 2012
LuxSci’s Premium Email Filtering has been enhanced to provide customers with the capacity to filter email based on DKIM signatures to provide more accurate protection from forged email.
Customers can add or upload lists of domains to be covered by DKIM checking (e.g. their own domains to start with) and can then say what should happen to messages when:
- a DKIM signature is present but is not valid
- no DKIM signature is present
- a valid DKIM signature is present
Enabling DKIM helps mitigate backscatter email and, even more importantly, eliminates inbound SPAM forged to appear to be from your own users or domains.
All LuxSci outbound email services support DKIM-signing messages; so enabling inbound filtering based on DKIM completes the loop of email authentication.
Premium Email Filtering also supports enforced use of SPF and TLS for inbound email from domains you choose. All of these things together serve to lock down your email flow and eliminate unwanted messages.
Tags: backscatter, dkim, filtering, spf
Posted in New Feature Announcements
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Monday, December 5th, 2011
LuxSci has long supported SPF for inbound and outbound email. SPF is a mechanism by which you can specify what servers are permitted to send email for your domain … and identify email from other places that may be fraudulent. This helps stop inbound Spam and helps ensure that your own messages are distinguished from any fraudulently sent ones by your recipients.
DKIM (DomainKeys Identified Mail) is the other standard for preventing email forgery. DKIM works by cryptographically signing each email message sent. The recipients can use information published in your DNS settings to verify if the message was sent from an approved location (e.g. the signature is valid) and that it has not been modified in transit.
LuxSci now supports DKIM for both inbound and outbound email.
See our online DKIM Generator Tool.
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Tags: dkim, domainkeys, identified mail, spf
Posted in Email Marketing, New Feature Announcements
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