[Mimedefang] Mail exchangers at roaringpenguin.com

Stephen L Johnson stephen.johnson at mail.state.ar.us
Thu Nov 20 16:29:31 EST 2003

On Wed, 2003-11-19 at 18:51, David F. Skoll wrote:
> Our hosting provider informed us that we had to change our IP addresses,
> so we're now coming from rather than
> I don't know why easynet.nl is blacklisting us; they shouldn't be. This
> is typical collateral damage from DNS-RBL's when an IP address changes. :-(

It could be that the IP range had been bit active for a while. So
unscurpulous site had "stolen" the IP block for a period of time, do
nasty stuff and then disappear.  Some of all of the IP are blacklisted.
When the IP block is used again for real, they find some or all of the
IP blacklisted.

There have been a couple of threads on the NANOG list talking about it.

Stephen L Johnson                       stephen.johnson at mail.state.ar.us
Unix Systems Administrator              sjohnson at monsters.org
Department of Information Systems
State of Arkansas

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