MSFT reverse IP failure?

Mon Feb 26 22:46:55 UTC 2018

Which "Exchange tools site" are you referring to?

Happy to help get this fixed up.

-jeff

-----Original Message-----
From: NANOG <nanog-bounces at nanog.org> On Behalf Of Ken Chase
Sent: Monday, February 26, 2018 1:31 PM
To: nanog at nanog.org
Subject: Re: MSFT reverse IP failure?

Having a client doing a test from the MSFT exchange tools site, which is failing.

NOQUEUE: reject: RCPT from unknown[13.67.59.89]: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [13.67.59.89];

NetRange:       13.64.0.0 - 13.107.255.255
CIDR:           13.96.0.0/13, 13.104.0.0/14, 13.64.0.0/11
NetName:        MSFT

A bit of an oversight?

/kc
-- 
Ken Chase - math at sizone.org Guelph Canada