Posts Tagged ‘spam’
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?
Read the rest of this post »
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.
Read the rest of this post »
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
5 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.
Read the rest of this post »
Tags: allow list, email address, filtering, sender, smtp, spam, spf, white list
Posted in LuxSci Library: The Technical Side of Email
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.
Read the rest of this post »
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?
Read the rest of this post »
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
6 Comments »
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!
Read the rest of this post »
Tags: filtering, malware, mx logic, mxcolo, mxlogic, phishing, spam
Posted in LuxSci Insider
No comments »
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.
Read the rest of this post »
Tags: email defense, filtering, pdf, spam
Posted in New Feature Announcements
No comments »
Friday, June 22nd, 2007
The following service advancements are being introduced into the Email Defense Premium Email Filtering service:
Read the rest of this post »
Tags: administration, filtering, spam, tls
Posted in New Feature Announcements
No comments »
|
 |
|
