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Edited by Erik Kangas, PhD
President of LuxSci
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Posts Tagged ‘spam’
Wednesday, June 23rd, 2010
 It is an extremely common and annoying practice of spammers to send you email that is from yourself or your colleagues or friends. I.e. “forged email”. We discuss this problem in the article: Save Yourself From “Yourself”: Stop Spam From Your Own Address.
Users of LuxSci’s Premium Email Filtering service now have a new and very powerful weapon to stop this kind of spam — “SPF-enabled allow list entries”.
This feature allows you to easily receive protection from forged spam messages while at the same time ensuring that legitimate messages sent between users in your organization are not filtered or caught as spam.
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Tags: allow list, dns, email filtering, spam, spf
Posted in New Feature Announcements
No comments »
Wednesday, September 30th, 2009
 Web Bugs are images in HTML-formatted email messages that, when viewed, tell the sender of the message that you read the message. This mechanism of obtaining an essentially covert confirmation that (a) your email address is valid, (b) the email got past your filters, and (c) you actually read the message, is pervasively used by Spammers to identify what addresses are reading their messages.
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Tags: ebbug, html, image, read receipt, spam, web bug
Posted in LuxSci Library: The Technical Side of Email, TechNotes
No comments »
Thursday, June 18th, 2009
 LuxSci has updated the optional Quarantine Reports that are sent to users of its Basic Spam and Virus Filtering service. These reports, once enabled, send users a daily email listing any new Spam and/or Virus messages caught by the filters and saved in separate Spam and Virus folders.
In addition to an improved look and feel, several new features are now available in these reports.
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Tags: always allow, deny, quarantine, release, report, spam
Posted in New Feature Announcements
1 Comment »
Saturday, March 14th, 2009
 You thought email was a simple concept, but you are at once confronted with a plethora of acronyms and jargon like POP, IMAP, WebMail, Aliases, Forwards, SMTP, IMAP, POP, Quota, SPAM, TLS, SSL, Archival, and more! This article describes the ins and outs of email, explains these terms, and helps you figure out what services and features you need from your personal or business email service provider.
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Tags: autoresponder, catch-all alias, email, email alias, email archival, email clients, email provider, imap, imaps, Internet Mail Access Protocol, personality, pop, pop3, pops, Post Office Protocol, private labeling, secure imap, secure pop, secure SMTP, security, Simple Mail Transport Protocol, smtp, smtp authentication, SMTP relaying, smtp server, spam, ssl, tls, web-based email, webmail
Posted in AAA Featured Articles, LuxSci Library: The Technical Side of Email, TechNotes
1 Comment »
Sunday, March 8th, 2009
 Email security issues and technologies are extremely complicated; however, here we intend to make the salient issues and solutions clearly understandable to all readers.
You may already know that email is not a perfectly secure communication medium; however, it might surprise you to learn just how inherently insecure email can be. Messages thought deleted can still exist in backup folders on remote servers years after being sent. Hackers can read and modify messages in transit, use your usernames and passwords to login to your online services, and steal your identity and critical information!
As the amount of crucial business conducted via email increases, so does the amount of Spam, viruses, hacking, fraud, and other malicious activity. Unless precautions are taken, email can leave you and your business open to escalating security and privacy risks. What are these risks?
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Tags: anonymous, eavesdropping, email bombs, email security, email threats, privacy, spam, viruses, worms
Posted in AAA Featured Articles, LuxSci Library: Security and Privacy, TechNotes
1 Comment »
Monday, February 23rd, 2009
 LuxSci is serious about the quick and efficient delivery of all email sent by our clients. We take extra steps to ensure that our servers sending outbound email are not blacklisted. Indeed, while it is impossible to never get on any blacklist (unless you are not sending email), we have very rarely been blocked; in theses cases, we have quickly re-routed email around the blocks to ensure delivery until the block is removed.
(Note that this article applies to our premium email hosting services, and not to our separate High Volume outbound email services).
How do we stay off of the blacklists?
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Tags: acceptable use policy, blacklists, email servers, limits, mailing lists, monitoring, spam, uce
Posted in LuxSci Insider
5 Comments »
Wednesday, January 28th, 2009
 We are observing growing numbers of users trying to send legitimate email messages only to be blocked because the IP address that they are getting from their Internet Service Provider (ISP) for their personal computer is on some major blacklist, like SpamHaus. Comcast, for example, has been the focus of many of these issues lately. This message blocking often happens even if a user is sending outbound email through a legitimate email provider like LuxSci.
Users invariably ask:
- Why is the mail blocked even though I am sending through LuxSci or some other email provider and not directly from my ISP?
- What can I do about it?
Fortunately, there is a good reason why the blocks occur and an easy solution to them … with LuxSci’s anonymous SMTP service.
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Tags: alternate port, anonymous, blacklist, block, blocked, comcast, ip address, isp, port, port 25, private smtp, received, sending email, smtp, spam, spamhaus
Posted in Business Solutions, LuxSci Library: The Technical Side of Email
4 Comments »
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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Tags: allow list, email address, filtering, sender, smtp, spam, spf, white list
Posted in LuxSci Library: The Technical Side of Email, TechNotes
2 Comments »
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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Tags: backscatter, bounce back, filter, non-delivery, spam
Posted in New Feature Announcements
1 Comment »
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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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, TechNotes
6 Comments »
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It is an extremely common and annoying practice of spammers to send you email that is from yourself or your colleagues or friends. I.e. “forged email”. We discuss this problem in the article: Save Yourself From “Yourself”: Stop Spam From Your Own Address.
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