On Thu, 11 Nov 2004, Steve Siegfried wrote:

> Jason Sievert wrote:
>
> FYI: other services blocking mail from dynamic ip address (which Comcast
> thoughtfully publishes for the world to block) include:

They may not be publishing it.  There are many providers nowadays that are 
filtering on dynamic-looking patterns in DNS:

bash-2.05a# nslookup 66.41.162.51 (original poster's IP)
...
Name:    c-66-41-162-51.mn.client2.attbi.com
Address:  66.41.162.51

In fact, there are people who are publishing lists of patterns that match 
dynamic space for larger providers, to make this kind of filtering 
possible without provider's needing to list these nets in services like 
DUL.

Filtering from dynamic space probably saves AOL from handling a HUGE 
amount of junk.  Since most of the spam nowadays comes from hacked windows 
boxen on cable and DSL networks in dynamic space.  There's little 
justification for end-users on dynamic IP's to be sending mail directly, 
rather than relaying through their provider's server.  Which is also why 
many providers, especially large cable providers, are filtering outbound 
SMTP from their customers.

_______________________________________________
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
Help beta test TCLUG's potential new home: http://plone.mn-linux.org
Got pictures for TCLUG? Beta test http://plone.mn-linux.org/gallery
tclug-list at mn-linux.org
https://mailman.real-time.com/mailman/listinfo/tclug-list