[AusNOG] Telstra Spam Problem

[Ross Wheeler]

On Mon, 19 Mar 2018, David Phelan wrote:

> Can someone contact me off list Re a problem with a Telstra IP Range 
> that is failing anti-spam due to a lack of RDNS

Hah! Good luck with that. Vast amounts of their address space have no 
RDNS, or worse, mismatching forward/reverse. I've never been able to find 
anyone there who has the ability and the interest to address it, and few 
who even recognise it as a problem.