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Posts Tagged ‘allow list’

Save Yourself From “Yourself”: Stop Spam From Your Own Address

Friday, September 22nd, 2017

I just got junk email … from me!

It is surprisingly common for users to receive Spam email messages that appear to come from their own address (i.e. “joe@domain.com” gets a Spam email addressed so it appears to be 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 even possible, while others are concerned if their Spam filters are not catching these messages.

Spam from your own email address

How can Spammers use your email address to send Spam?

The way that email works at a fundamental level, there is very little validation performed on the apparent identity of the “Sender” of an email.  Just as you could mail a letter at the post office and write any return address on it, a Spammer can compose and send an email address with any “From” email address and name.  This is in fact extremely easy to do, and Spammers use this facility with almost every message that they send.

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Better Forged Email Filtering with Improved SPF Support

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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New: Restrict Which Email Addresses Your Users can Receive Email From

Thursday, May 28th, 2009

LuxSci’s new “Sender Restriction” feature allows account and domain administrators to exert firm control over which email is delivered to their users.  When enabled, this feature permits the specification of:

  • An “allowed sender list” of domains and/or email addresses.  Email from anyone not on the list will be refused (bounced back to the sender with an error).
  • An “denied sender list” of domains and/or email addresses.  Email from anyone on this list will be refused (bounced back to the sender with an error).

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