[AusNOG] iiNet/WestNet Anti-Spam - False Positives

[David Rawling]

Hi all

I think this is only tangentially on topic for AusNOG, but could
someone point me in the direction of a contact at TPG/iiNet/WestNet to
help resolve mail delivery issues to iiNet and Westnet addresses?

I have a customer who's been unable to send to iiNet et al for a couple
of weeks now; the iiNet server is returning "5.7.1 SPF unauthorized
mail is prohibited" for domains with valid SPF and also for domains
with no SPF records.

They have had no issues with other networks including GMail, O365 and
the like.

I do have an open incident with iiNet but the responses haven't helped.
There are also isolated reports elsewhere of the same problem. I've
validated the customer's SPF/DKIM/DMARC, and they seem OK to me, but I
just want to fix it. That means if I'm wrong I want someone to tell me
how I've stuffed up.

Thanks in advance

Dave.
-- 
David Rawling
t: +61 41 213 5513  |  e: djr at pdconsec.net