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News, Solutions, and Insider Notes
Posts Tagged ‘spam’
Tuesday, December 30th, 2008
We have recently seen a significant increase in occurrences where users are getting Spam email messages that appear to come from their own address (i.e. "joe@domain.com" gets a Spam email addressed from "joe@domain.com"). We discussed this issue tangentially in a previous posting: Bounce Back & BackScatter Spam - "Who Stole My Email Address"? However, many users wonder how this is possible, while others are concerned that their Spam filters are not catching these messages.
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Popularity: 56% [?]
Tags: allow list, email address, filtering, sender, smtp, spam, spf, white list
Posted in TechNotes
Monday, December 15th, 2008
We recently talked about the problems created by backscatter or bounce back spam. I.e. the pain caused by getting lots of "delivery failure" messages for messages that you never sent, but which arrive at your door anyway. One of the solutions we have provided for dealing with backscatter, if you have this problem, is to create a custom email filter in your LuxSci WebMail interface that will delete or save all bounce messages. While this works well, it also has a drawback.
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Popularity: 23% [?]
Tags: backscatter, bounce back, filter, non-delivery, spam
Posted in New Feature Announcements
Tuesday, December 9th, 2008
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?
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Popularity: 82% [?] 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 TechNotes
Friday, November 14th, 2008
Internet service providers Global Crossing and Hurricane Electric shut down the San Jose, CA, web hosting provider "McColo" on Tuesday after it was determined that the ISP was aiding criminals in the sending of Spam, perpetrating online fraud, and providing access to child pornography. McColo was used by some of the most active and prolific spammers in the world; the suspension of its services has resulted in a 75% decrease in spam, worldwide!
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Popularity: 33% [?]
Tags: filtering, malware, mx logic, mxcolo, mxlogic, phishing, spam
Posted in LuxSci Insider
Monday, November 5th, 2007
A proprietary "Deep Content Analysis" filter has been added to our "Email Defense" Premium Email Filtering solutions. This anti-spam filter targets attachment-based spam variations, specifically PDF spam. PDF spam is the latest generation of image spam, which uses graphics instead of other masking techniques to conceal an unsolicited advertisement’s call to action.
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Popularity: 13% [?]
Tags: email defense, filtering, pdf, spam
Posted in New Feature Announcements
Friday, June 22nd, 2007
The following service advancements are being introduced into the Email Defense Premium Email Filtering service:
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Popularity: 10% [?]
Tags: administration, filtering, spam, tls
Posted in New Feature Announcements
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