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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I am even more confused. As my eyes glaze
over. </span></font></p>
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<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
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<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> Stephen Swaney
[mailto:Steve@swaney.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>Tuesday, July
22, 2003</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'> </span></font><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>3:38 PM</span></font><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> MAILSCANNER@JISCMAIL.AC.UK<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Whitelisted</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Actually I placed Ken A, Pacific.Net's excellent solution for this in
the MailScanner FAQ.<br>
<br>
<br>
<a href="http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/169.html">http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/169.html</a><br>
<br>
How easy can it get.<br>
<br>
Steve<br>
Steve Swaney<br>
steve@swaney.com<br>
<a href="http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/169.html"></a><br>
On Tue, 2003-07-22 at </span></font>16:19, Derek Winkler wrote: </p>
<p class=MsoNormal style='margin-bottom:12.0pt'><i><font size=2 color="#737373"
face="Times New Roman"><span style='font-size:10.0pt;color:#737373;font-style:
italic'>See earlier thread on splitting messages with multiple recipients into
messages with one recipient each as a workaround.</span></font><br>
<br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>-----Original Message-----<br>
From: Matt Kettler [</span></font><a href="mailto:mkettler@EVI-INC.COM"><font
size=2><span style='font-size:10.0pt'>mailto:mkettler@EVI-INC.COM</span></font></a></i><i><font
size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;font-style:
italic'>]<br>
Sent: </span></font></i><i><font size=2 color="#737373"><span style='font-size:
10.0pt;color:#737373;font-style:italic'>Tuesday, July 22, 2003</span></font></i><i><font
size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;font-style:
italic'> </span></font></i><i><font size=2 color="#737373"><span
style='font-size:10.0pt;color:#737373;font-style:italic'>4:16 PM</span></font></i><i><font
size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;font-style:
italic'><br>
To: MAILSCANNER@jiscmail.ac.uk<br>
Subject: Re: Whitelisted</span></font><br>
<font color="#737373"><span style='color:#737373'><br>
</span></font><br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>At </span></font></i><i><font size=2 color="#737373"><span
style='font-size:10.0pt;color:#737373;font-style:italic'>12:00 PM</span></font></i><i><font
size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;font-style:
italic'> </span></font></i><i><font size=2 color="#737373"><span
style='font-size:10.0pt;color:#737373;font-style:italic'>7/22/2003</span></font></i><i><font
size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;font-style:
italic'> -0600, Dustin Baer wrote:<br>
> > Dustin,<br>
> > Maybe that is where my misunderstanding is. I thought, that
would turn off<br>
> > spam filtering for that user only. Does that say anything
addressed to<br>
> that<br>
> > user and anyone else, will go through?<br>
><br>
>Hi Kris,<br>
><br>
>As far as I understand MailScanner's whitelisting, if one recipient is<br>
>in the whitelist, all recipients receive the message. I have run into<br>
>your situation also, and refuse to whitelist recipient names here, if I<br>
>see that they receive a high volume of spam. I don't want other
people<br>
>getting spam, just because they want their name whitelisted.<br>
><br>
>I am sure someone will correct me, if I have mis-stated how MailScanner<br>
>operates its whitelist.</span></font><br>
<br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>That is correct. And this "problem" is a
fundamental limit of running at<br>
the MTA layer. It's not a bug, or a mistake, it's a design tradeoff between<br>
flexibility and efficiency.</span></font><br>
<br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>Mailscanner runs at the MTA layer, not the MDA layer, so
there is not one<br>
copy of the message per user when MS sees it.. there's just one message<br>
with many recipients. Thus MailScanner can only whitelist that one message,<br>
or not whitelist it. There is no such thing as "well, later when you go to<br>
deliver this, give these guys this copy, and that guy this other version".<br>
It's one message, and they'll all get the same message, all MailScanner can<br>
do is edit it.</span></font><br>
<br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>Running at the MTA layer is much more efficient, because you
only scan the<br>
message once, but it inherently has limits on "per user"
customization. The<br>
MTA layer is the ideal spot to do virus scanning, because you rarely want<br>
user-specific behaviors for virus scanning. However doing spam scanning at<br>
the MTA layer is somewhat limiting if you've got users that need
"exceptions".</span></font><br>
<br>
</i><i><font size=2 color="#737373"><span style='font-size:10.0pt;color:#737373;
font-style:italic'>Personally I deal with it by creating custom SpamAssassin
rules instead of<br>
whitelists. This gives me the ability to target specific kinds of messages,<br>
rather than specific sources or destinations. If I have to do a whitelist,<br>
I try to make it a "fromto" type whitelist where it winds up narrowly<br>
defined. I never use To: type whitelists, and I avoid simple From:<br>
whitelists as well.</span></font></i></p>
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