Which "Exchange tools site" are you referring to? Happy to help get this fixed up.
-jeff -----Original Message----- From: NANOG <[email protected]> On Behalf Of Ken Chase Sent: Monday, February 26, 2018 1:31 PM To: [email protected] 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 - [email protected] Guelph Canada
