Hotmail NOC Contact

Suresh Ramasubramanian ops.lists at
Thu Apr 3 09:13:47 UTC 2008

On Thu, Apr 3, 2008 at 3:00 AM, Jason J. W. Williams
<williamsjj at> wrote:
>  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.

Easier if you paste a sample bounce

And check if you have some kind of smtp capable firewall device (like
a barracuda) or maybe an outsourced filtering provider that's
filtering this lot before it reaches your mailserver.


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