[rescue] anyone else here on AT&T Broadband (now Comcast) ?

Patrick Giagnocavo +1.717.201.3366 patrick at zill.net
Tue Apr 1 00:20:49 CST 2003

On Tue, Apr 01, 2003 at 01:25:04AM -0500, Curtis H. Wilbar Jr. wrote:
> Today I tried sending mail to an @aol.com address....
> Looks like comcast has "published" the dynamic IP range for cable
> subscribers.... and aol uses this info to block the accepting of mail
> from those IPs....  

AOL is blocking you either:

1.  based on a known database of dialup and DSL accounts IP addresses
that email servers "shouldn't" be running on


2.  based on reverse DNS that matches certain criteria, e.g. for
Verizon, all DSL is dsl-verizon.net , so some folks block


3.  They noticed that your reverse DNS does not match your forward DNS
(though this is unlikely, since even the rescue list mail server
doesn't match in this case)

Not much you can do about it, actually.


Patrick Giagnocavo
patrick at zill.net

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