Hi Todd,
No, I was intending to set up a notification process to automatically let us
know when our rating/score changed on these sites.
Darin.
----- Original Message -----
From: Todd Richards
To: declude.junkmail@declude.com
Sent: Saturday, May 16, 2009 1:34 PM
Subject: RE: [Declude.JunkMail] BackScatter
Thanks Darin - good suggestions. I checked with SenderBase and we are "good".
With SenderScore, on the other hand, I can't tell whether we are good or bad.
Our sender score is a 96, but our risk is high.
When you say you are going to monitor them, do you mean just manually checking
them?
Todd
Results for 8.7.193.82
Sender Score: 96
IP Address Information
Hostname
mail.nnepa.com
Other IPs with same hostname None
Blacklists None
Sender Score Certified No
Safelist No
Deliverability
This represents whether email from 8.7.193.82 is being accepted for delivery in
the Sender Score reporting network. Return Path offers a variety of detailed
reporting tools to monitor delivery performance.
Accepted Rate: 31.79%
Risk: High
Reputation Measures
These are individual measures of the reputation for 8.7.193.82.
Measure Type
Value
Complaints Score (0-100)
100
Volume Score (0-100)
0
External Reputation Score (0-100)
67
Unknown Users Score (0-100)
12
Spam Trap Hits Count
1
Last Spam Trap Date Date 04/18/2009
Sending Domains
We've seen 8.7.193.82 sending email for these domains.
Domain Authenticated
mail.nnepa.com Yes - A Record, Reverse DNS Match
From: supp...@declude.com [mailto:supp...@declude.com] On Behalf Of Darin Cox
Sent: Saturday, May 16, 2009 7:33 AM
To: declude.junkmail@declude.com
Subject: Re: [Declude.JunkMail] BackScatter
Todd, you might want to check SenderBase. We had a similar issue a month ago.
SenderBase had recorded a number of backscatter messages from a private list we
host that often gets attacked by spammers. The unauthorized access notices
that were sent back were seen as backscatter by SenderBase and they reduced our
rating from Good to Poor. IronPort filtering devices use the SenderBase rating
as one of their blocking criteria, so we were blocked from sending to mail
servers protected by IronPort.
Fortunately there were only a handful of our customers affected, we rerouted
mail temporarily, and we were upgraded in SenderBase two days later after
adding filtering to that hosting account.
Matt Bramble pointed out to me another site, SenderScore.org, that you might
want to watch as well. I'm planning to set up monitoring on these sites as an
additional detection of delivery problems.
Darin.
----- Original Message -----
From: Michael Graveen
To: declude.junkmail@declude.com
Sent: Saturday, May 16, 2009 7:54 AM
Subject: re: [Declude.JunkMail] BackScatter
I think Greylisting reduces backscatter. Greylisting stops the majority of the
SPAM from ever reaching our mail server, so it never has a chance to get
bounced back because of a non existent user, etc.
Mike
________________________________________
Hi Everyone -
We've been having a few issues with mail servers refusing our mail. Today I
ran a test on DNSStuff and found that our IP is on BackScatter.org. They are
referencing an event on 4/27, and supposedly we will be removed after 4 weeks
if they haven't had any other issues. Of course we can pay to have it removed
sooner. I'm not sure if being listed in their DB is the main culprit to the
server refusals that I've seen?
We switched over to SmarterMail in mid-April. Since 4/27, we have implemented
grey listing.
Is grey listing a good first line of defense? Is there anything else I should
be doing to prevent back scatter?
Thanks for your thoughts on this.
Todd
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