MailEnable and Spam

I've a dedicated server using MailEnable as Mail Server.
My customer is... let's say CustomerDomain.com to ease my life.

Since 2 days we are beeing bombarded by emails sent by "AnEmployee@CustomerDomain.Com".  But when i look at the real message header, i see that it's sent from other places.

Here's few examples of messages headers:

Received: from atayatirim.com.tr ([125.235.39.68]) by CustomerDomain.com with MailEnable ESMTP; Tue, 20 Mar 2012 18:26:20 -0600
Message-ID: <Wed, 21 Mar 2012 07:25:24 +0700.707080@CustomerDomain.com>
Date: Wed, 21 Mar 2012 07:25:24 +0700
From: <alain@CustomerDomain.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6
MIME-Version: 1.0
To: <alain@CustomerDomain.com>
Subject: hi
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Return-Path: <huskierks21@atayatirim.com.tr>

Open in new window


Another example
Received: from uob-oskam.com.my ([80.174.113.48]) by CustomerDomain.com with MailEnable ESMTP; Tue, 20 Mar 2012 14:43:06 -0600
Message-ID: <Tue, 20 Mar 2012 21:42:09 +0100.807090@CustomerDomain.com>
Date: Tue, 20 Mar 2012 21:42:09 +0100
From: <alain@CustomerDomain.com>,
	<info@CustomerDomain.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6
MIME-Version: 1.0
To: <alain@CustomerDomain.com>,
	<fbellavance@CustomerDomain.com>,
	<info@CustomerDomain.com>
Subject: hi
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Return-Path: <steakvc2101@uob-oskam.com.my>
X-Read: 1

Open in new window


How is it possible to stop these "impersonations" with MailEnable?

Thanks for your help
LVL 10
Christian de BellefeuilleProgrammerAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

PapertripCommented:
I have never used MailEnable, but do you have any anti-spam/spoofing features installed?

http://www.mailenable.com/features/anti-spam.asp
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Christian de BellefeuilleProgrammerAuthor Commented:
I've activated the "Enable DNS BlackListing" and "Enable URL Blacklisting", and subscribed to BarracudaCentral.org.

I've also protected the Relaying (for outgoing emails to other domain names), and it requires to be authenticated, and it always require a POP3 connection prior to the SMTP connection.
0
Christian de BellefeuilleProgrammerAuthor Commented:
I must say that this subscription to BarracudaCentral.org is quite recent.

We keep receiving these emails, but they are marked as junk since i see that in the email envelope:

X-ME-Content: Deliver-To=Junk

I'll let it run like this for a while and see if it reduce the amount of undetected spam.

Once that i've seen that it's working properly and that there's no "False Positive", i'll stop marking them as spam and simply mark them for deletion...
0
PapertripCommented:
Cool good luck!
0
Christian de BellefeuilleProgrammerAuthor Commented:
I've marked the emails to be deleted instead of placing it in the junk folder.  There was no false positive.  We still have some incomming spams, but for the moment that's acceptable.
If it become a problem, we might buy a license of MailEnable to add Bayesian Filtering, SPF and other stuff.

We still can access the MailEnable logs to see the real senders, to determine if we got false positive (by looking at the Error 554).

Thanks for your help
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Email Servers

From novice to tech pro — start learning today.