On Sat, 17 Apr 2010, William Herrin wrote:
On Fri, Apr 16, 2010 at 6:25 PM, Mike <mike-nanog@tiedyenetworks.com> wrote:
I've tried to get the attention of senderbase, which is claiming activity from my address space which is in fact either un-routed or within dynamic subscriber blocks that have outbound smtp filtering in effect.
Interesting; I see similar results for my address space. Two addresses, one of which hasn't been attached to a machine for a decade and the other a virtual IP on a web server where the particular IP never emits connections. Magnitude's only "0.48" for both but still, they shouldn't even appear.
I suspect a bug in their system. I checked a handful of unrouted blocks from our address space and eventually hit a /24 from which senderbase lists an IP with magnitude 0.48, but the space hasn't been routed for 13 months. They say they saw something from it on 2010-04-06...which I'd say is highly unlikely. ---------------------------------------------------------------------- Jon Lewis | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________