On 25 Dec 2005 at 16:00, Jimmy Hughes wrote:

> I am getting "Delivery Status Notification (Failure)" notices in my inbox,
> showing that my email address is being used (or trying) to send X rated
> emails to "[EMAIL PROTECTED]" and that it is undeliverable
> 
> "The reason for the problem:
> 5.1.0 - Unknown address error 550-'5.1.1 unknown or illegal alias:
> [EMAIL PROTECTED]' "
> 
> Anything I can do about this?

Simply put, "no".  What's happening is that some spammer happens to be 
using your email address as the 'from' [and probably SMTP envelope] 
address for some of its spam.  AFAIK, there's essentially no way even to 
track down the spammer, much less any way to get them to stop.

I get those all the time.  In fact, internal addresses at work [that are 
NEVER used to send email] get them...  It is the flip side of receiving 
email from a dictionary attack..

This is one of the primary reasons why generating 'bounce' messages for 
spam (which apps like MailWasher will do if you ask it to) is such a bad 
idea: it essentially turns random mail servers around the world into 
participants in a third-party distributed mailbomb attack on you.  It is 
hard to filter [since the bounces are legit and won't look any different 
from *real* bounces you might get for a mistyped address or the like].  

Of course, the server can't know this -- unlike with mailwasher where it 
is generating a gratuitous [and almost wrong] bounce messages, these are 
legit, SMTP-protocol-called-for bounce messages, and so you'll get them.

About the only thing that mostly works is that generally the bounce 
message includes enough of [if not all of] the original message and if 
you have a smart enough spam filterer [PopFile has no trouble with this], 
it'll detect the *bounces* as spam, also and so they won't be much of an 
issue for you.

  /Bernie\

-- 
Bernie Cosell                     Fantasy Farm Fibers
mailto:[EMAIL PROTECTED]     Pearisburg, VA
    -->  Too many people, too few sheep  <--       

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