Hotmail NOC Contact

Raymond L. Corbin rcorbin at
Wed Apr 2 22:18:03 UTC 2008

I've seen similar things when hotmail users are sending emails to some of our users but it bounces back to them within their network. Generally it was DNS related. After having about 3 correspondences with them they end up fixing it. From what I remember they were sending to the A record and not the MX record.


From: Jason J. W. Williams [mailto:williamsjj at]
Sent: Wednesday, April 02, 2008 6:13 PM
To: Raymond L. Corbin; nanog at
Subject: RE: Hotmail NOC Contact

Hi Raymond,

It's addresses sending to our users. The senders get a 554 error from Hotmail with no description. Our logs on our side are clean, so its a bit of a blackbox. We need some insight from Hotmail's side. Thank you also for the link.


________________________Jason J. W. WilliamsCOO/CTO, DigiTar
Voice: 208.343.8520Mobile: 208.863.0727FAX: 208.322-8522
E-mail: williamsjj at digitar.comXMPP/Jabber: williamsjj at

-----Original Message-----
From: Raymond L. Corbin [mailto:rcorbin at]
Sent: Wed 4/2/2008 3:45 PM
To: Jason J. W. Williams; nanog at
Subject: RE: Hotmail NOC Contact


Is it hotmail users sending your users emails that are being rejected, or is it your users sending hotmail emails that end up rejected?


From: owner-nanog at [mailto:owner-nanog at] On Behalf Of Jason J. W. Williams
Sent: Wednesday, April 02, 2008 5:31 PM
To: nanog at
Subject: Hotmail NOC Contact

Hey All,

Does anyone have a good contact number for the Hotmail NOC? We've got e-mails from Hotmail to some of our customers being returned the Hotmail sender with a 554 error message fairly regularly. Our logs aren't showing any rejections, so we need to talk to Hotmail and find out what the 554 means on their side (there's no error description). Any help is greatly appreciated.


Jason J. W. Williams
COO/CTO, DigiTar
Voice: 208.343.8520
Mobile: 208.863.0727
FAX: 208.322-8522
E-mail: williamsjj at
XMPP/Jabber: williamsjj at

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