[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Advice on setting up MailEnable

Posted on 2012-09-09
Medium Priority
Last Modified: 2012-09-10
I have an issue with one customers use of the mail server.

They seem to have a virus of sorts that is sending emails through their authenticated email account at the rate of about 100 emails per hour.

The program logs on as them, sets the sender email address as XXX@facebookmaill.com and starts sending thousands of email addresses that either do exist or don't

What I would like to setup Mailenable so that it never sends from a specific domain name (eg @facebookmaill.com)

Does anyone know how we would do this?

We are using MailEnable Professional 3.61
Question by:lawso
  • 3
  • 2
LVL 23

Expert Comment

by:Stelian Stan
ID: 38383052
Check the email Relay settings on Exchange server.
Exchange 2007: http://www.visualwin.com/AD-Controller/
Exchange 2003: http://www.petri.co.il/preventing_exchange_2000_2003_from_relaying.htm
Exchange 2010: http://exchangepedia.com/2007/01/exchange-server-2007-how-to-allow-relaying.html

First make sure you have that configured properly.
LVL 17

Expert Comment

ID: 38383174
Obviously, the first step is to block these users before your mail server gets blacklisted as a spam source.  Change the password on the compromised accounts, or at the very least block their outgoing SMTP access.

If MailEnable supports rules/filtering/spam checking on OUTBOUND messages (many mail servers do not), you can likely create something that will throw away these messages.  If not, you will have to wait until each errant user corrects their problem.

Author Comment

ID: 38384843
Thanks BudDurland

I changed the password on the one account causing issues and that seems to have fixed everything. For now.

Unfortunately Mailenable doesn't have any filtering etc on outbound messages.

Do you think using a SmartHost be beneficial?
Would that mean that all the mail would be going out through the Smart host instead of our server?
NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

LVL 17

Accepted Solution

BudDurland earned 1500 total points
ID: 38384863
A smart host is simply another hop in the SMTP transit -- your mail server delivers all outbound mail to the smart host, the smart host delivers it to the final destination.  They are sometimes referred to as a 'relay'.  In days gone by, the 'smart' piece was that the host could do proper DNS look ups, or had message queuing capabilities.  Nowadays, it's more common to use a smart host because your ISP has blocked all outbound SMTP on their network except from their own mail server.

To your point, a smart host could be used to check your outbound mail for spam.  Our anti-spam appliance (from Sophos)  scans both inbound and outbound.  There are many others, notably from Barracuda.  If you know someone with the expertise, a small box running Linux can be configured to do this using open source tools as well.

Author Comment

ID: 38384892
Thanks for the advice ... all very sound

Author Closing Comment

ID: 38384893

Featured Post

Veeam Disaster Recovery in Microsoft Azure

Veeam PN for Microsoft Azure is a FREE solution designed to simplify and automate the setup of a DR site in Microsoft Azure using lightweight software-defined networking. It reduces the complexity of VPN deployments and is designed for businesses of ALL sizes.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Marketers need statistics and metrics like everybody else needs oxygen. In this article we explain how to enable marketing campaign statistics for Microsoft Exchange mail.
Phishing emails are a popular malware delivery vehicle for attack.  While there are many ways for an attacker to increase the chances of success for their phishing emails, one of the most effective methods involves spoofing the message to appear to …
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager
Suggested Courses
Course of the Month19 days, 11 hours left to enroll

873 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question