http://bugzilla.spamassassin.org/show_bug.cgi?id=3058





------- Additional Comments From [EMAIL PROTECTED]  2004-02-18 12:47 -------
Subject: Re:  New: Problem with people who have dynamic IP from
 there ISP



[EMAIL PROTECTED] wrote:
> 
> Alot of innocent victims are getting blocked because there respectible large 
> ISP has a spammer on 1 IP out of a few million.  This gets the /13 or how 
> ever 
> many they have on the SORBS RBL and causes email blocking for the spammer 
> plus 
> millions of others.  For instance I know a guy who uses Comcast and has his 
> ip 
> BL'ed
> 
> SpamAssassin can be configured to use or not use specific DNS BLs. You should 
> configure it, or at least have an option to NOT use BLs that check if a SMTP 
> connection comes from a dynamically-allocated IP address from at least the 
> largest ISP's.
> 
> Please understand that I have called Comcast (my ISP) and ask them to get my 
> dynamic IP address removed from a list of dynamic addresses, they refused to 
> do so. I am using a dynamic IP address. Dynamic IP addresses are not �bad�. 
> The maintainers of lists of dynamic address lists (e.g. MAPS DUL) would never 
> be convinced to remove an actual dynamic IP from their list just because it 
> inconveniences a user. If they did, their list would become less reliable, 
> and 
> therefore less valuable.
> 
> We�re dealing with a configuration issue here � one that spam assassins 
> administrators need to work on. SpamAssassin can be configured to not 
> disqualify messages originating from a dynamically allocated IP address. I�m 
> sure you can find someone within your company who can figure out how.
> 
> Thanks in advance for fixing this!
> 

Well, MAPS defaults to score of 0 (never check). Most of the sorbs lists 
are scored pretty low.

I believe we shouldn't have an issue if:

  1) The users on the dynamic IP are sending through their ISP's SMTP relay.
  2) Trusted networks is set correctly
  3) Trusted networks works properly (open bugs on this, I believe?)
  4) SA is aware that the RBL in question is a "dialup" type list.

I believe the way SA is supposed to work in this case is: "ok, someone 
at 1.2.3.4.dynamic.big.isp sent mail though mx-relay.big.isp. Since they 
went through a relay, I don't care if 4.3.2.1 is on a dynamic IP RBL".

If you are on a dynamic list, and are not sending through a relay, well, 
that is a problem...

Correct, a maintainer of a dynamic IP rbl is not going to remove and IP 
from a list because of your inconvenience... if they did, you'd have to 
call them every time you changed your IP!

--Rich





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