E-mail is very prone to this sort of thing. When an e-mail is crafted, you can say you are anyone you wish! Spammers take advantage of this to give themselves more credibility and deflect bounce messages to other people. PerfectMail has _anti-spoof_...

_Can I prevent spammers from sending messages that spoof legitimate users on my PerfectMail server?_ E-mail is very prone to this sort of thing. When an e-mail is crafted, you can say you are anyone you wish! Spammers take advantage of this to give ...

It's important to have a clear understanding of what e-mail is, or more specifically how it is structured. The concepts referred to in this section will be used throughout this document. Many of the idiosyncrasies of spam result directly from the struc...

_We have some email addresses published on our website. They receive more spam than our other addresses. Is there anything we can do to distract the spammers from publicly published email addresses?_ Publicly published e-mail addresses are de facto spam ...

_I really don't want to see any bounce messages. I simply don't care. Is there any way to stop all bounce messages from arriving on my server?_ RFC 2142 (http://www.ietf.org/rfc/rfc2142.txt [1]) describes commonly used (and expected) e-mail addresses. A ...

PERFECTMAIL E-MAIL TEST SCORE - RELAY HOST: NO DNS PTR RECORD QUESTION I would like to know an explanation on the following score PerfectMail added to an INCOMING email. +8 Relay Host: No DNS PTR record Is this an internal problem from our system...

PerfectMail has a number of _advanced analysis_ features, including features in the _Content Filters_ (Filters > Content) to identify obfuscated words and phrases in the subject and body of an e-mail. ANTI-OBFUSCATION Anti-Obfuscation is a techniqu...

A "self sent" message is an e-mail message originating from outside your organization, where the "from" and "to" addresses are the same. Spammers set the "from" address to match the "to" address in an attempt to spoof the "from" address and side step spam...

SUMMARY: What is E-mail Backscatter, also known as outscatter, misdirected bounces, blowback or collateral spam? How can this affect my PerfectMail server? What can I do to prevent E-mail Backscatter? Is this an issue with my PerfectMail server? ANSWE...

Spoofing is the act of forging e-mail headers to make it look like the e-mail is originating from a different sender or server. A spammer can simply state they are sending a message from another e-mail address, almost at will. Spoofing is so hard to stop...

_I am supposed to receive an E-mail Activity Report every day, but I never see it in my in-box!_ he most likely reason your are not receiving your E-mail Activity Report is that it may be getting filtered by additional spam filtering on your mail se...

E-mail is actually composed of two elements. The envelope and the actual e-mail. Think of it like a conventional letter. The envelope contains the addressing/delivery information. Your mail server looks at the envelope to decide where the e-mail sho...

_Why am I getting the type of spam that I am getting? Other people aren't getting this stuff! Why am I?_ Different people get different types of spam for a number of reasons ranging from online behaviour to visibility on the Internet. E-mail address harv...