>YES!!! The DUL list is a list of dialup lines. The point is that dialup
>connections shouldn't be running mail servers.
NO!!!! That isn�t the point AT ALL!!!! (do I win? I have more "!" )
The point is that SMTP clients on DUL ip�s shouldn�t be delivering to
public MX hosts (nothing technically wrong, as you know, but DUL�s, as you
know, have been, are, and will be badly abused by spammers), but only
relaying through the access provider's MTA where SMTP traffic can logged
and monitored, and abuse can be blocked.
All access providers should block port 25 access on all ip's accept their
own mailservers.
Oh, I bet that will get some response from the fully-automatic
assault-rifle "sportsmen" and Libertarian crowd !! :)))
>They are connecting to your mail server, so just so long as you whitelist
>them or do not use DUL, there will be zero problems.
I can�t see ANY disadvantages to them providing DUL and me using
DUL. Completely optional all the way around.
>>None of their business how, why, when or where a company connects to the
>>internet.
May you be DoS'ed from 1000 DUL ip's with 150k msgs / hour of dictionary
attacks and SMTP command pipelining ad infinitum, R.I.P. :)))
>ORBS checks for open relays. DUL checks for dialup connections
>(regardless of whether or not they run open relays, closed relays, or no
>SMTP server).
Come on, Scott, you of all people should know why DUL exists. In perfect
world smothered in a fog of universal goodwill towards all and absent abuse
and criminals, I agree with you completely, but ....
Anyway, I don�t find DUL to be any other than incremental assistance.
eg, here�s that new IMGate user of last week, showing the rejects for the 3
MAPS db�s:
blocked using blackholes.mail-abuse.org
17 harrispollonline.com
2 webmarkservices.com
1 real-net.net
1 telalink.net
blocked using dialups.mail-abuse.org
135 gte.net
25 bellsouth.net
4 optusnet.com.au
2 acay.com.au
2 swbell.net
1 one.net.au
1 is.net.tw
1 uu.net
blocked using relays.mail-abuse.org
33 211.171.202.202
25 daewoo.com
25 211.196.209.9
25 mappointasia.com
25 211.106.19.59
25 202.96.231.181
18 200.21.22.162
14 213.52.143.38
14 206.67.58.241
14 sun-star.co.jp
10 proxy.iap.li
10 193.92.90.212
10 192.121.183.194
10 200.23.248.25
9 211.172.226.130
9 skuniv.ac.kr
8 202.30.204.42
7 eu-cast.or.jp
Typically, RSS is always the most, then DUL, the RBL.
In contrast, DNS rejections for "unknown host @senderdomain" plays a bigger
role. eg, this ip had about 3000 unknown sender host rejects in the above
report.
Len
http://MenAndMice.com/DNS-training
http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K
http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse mail gateways
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
