Hotmail NOC Contact

Raymond L. Corbin rcorbin at
Thu Apr 3 20:52:53 UTC 2008


We do hosting for about 300,000 users in our shared environment. They have forwarders setup or aliases that send to their external addresses. This forwards their spam as well. We purchased quite a few barracuda servers and became their case study for outbound units. They actually do a really good job at blocking the spam. But as spam changes every minute, we can only get updates every hour. The mail forwarders is the only spam that come from our network. Try subscribing to hotmails reporting services so you get reports on spam from your IP address, and they have the online reports that show if you add your AS so you can see a report for all ip's in your network.

From: owner-nanog at [owner-nanog at] On Behalf Of Fox, Thomas [tfox at]
Sent: Thursday, April 03, 2008 12:26 PM
To: 'Michael Holstein'
Cc: nanog at
Subject: RE: Hotmail NOC Contact

> Do you rewrite/forward mail? .. we're a .edu, and allow our students to
> forward to hotmail/yahoo/whatever .. so when a phishing/malware sweep
> hits campus, about 60% is reflected back onto the Internet (sometimes
> our Anticrap gateway catches it, sometimes not). Because of the way
> addresses are re-written, it looks like it came from us.

Hi Micheal,

We do host mail for about 100 companies, but no remailing.


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