Question

Blocking outgoing mail to certain domains

Asked by: alexkink

Hello,

I'm in need of a solution whereby I need to block outgoing mail from reaching certain domains OR certain email addresses. Lets say one of these blacklisted addresses is bob@acme.com

When an email user sends the following message, bob@acme.com must not receive it:

To: john@abc.com, bob@acme.com
Bcc: sam@internet.com
Subject: Hello
Body: Hi guys

The rest of the addresses must be able to get the message.
The mail server that I'm using is a hosting account that runs CPanel. I have Spam Assassin and BoxTrapper at my disposal but they seem to be limited to incoming mail only.
E-mail client software is mostly MS Outlook, but if other email clients support this functionality I can switch too.
If the solution involves using a different server software, I'm open to that too.

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Asked On
2009-11-01 at 12:05:51ID24862201
Tags

cpanel

,

email

,

email filtering

Topics

CPanel

,

Email Software

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: moorhouselondonPosted on 2009-11-01 at 13:44:33ID: 25715651

Mdaemon has comprehensive facilities for doing this kind of thing.

www.altn.com

 

by: moorhouselondonPosted on 2009-11-01 at 13:46:03ID: 25715685

Then I noticed the word "Apple".  You'll need to host Mdaemon on a PC.

 

by: alexkinkPosted on 2009-11-01 at 14:00:58ID: 25715783

Thanks moorhouselondon. I didn't even notice that I had added "Apple desktop" by accident. I'm in a windows environment.

I have installed MDaemon. Do you know where I can look to configure such thing?

Thanks again!

 

by: moorhouselondonPosted on 2009-11-01 at 14:27:02ID: 25715894

The best approach is to setup bob@acme.com as a user.  This is done in the Accounts section.  In the Accounts options for Bob, there is a Restrictions menu where you can specify that Bob cannot receive messages from the outside world.

 

by: moorhouselondonPosted on 2009-11-01 at 14:35:28ID: 25715934

Hmm, rereading your Q, you are talking about stripping out the name bob@acme.com from an outgoing message.  In which case look at Security, Content Filter:-

If the TO Header contains bob@acme.com

Search and Replace within Header.  The Header being the TO Header, the text is bob@acme.com.  Not sure what happens if Bob is the only recipient - but you can add that in as another rule - the rules act one after the other.  Need to test what happens if Bob is BCC'ed on a message.

 

by: shaunakPosted on 2009-11-04 at 07:28:49ID: 25740264

Create a Account level filter in cPanel as per the attached screenshot.

 

by: moorhouselondonPosted on 2009-11-04 at 10:00:32ID: 25741993

shaunak:

In alexkink's original example

To: john@abc.com, bob@acme.com
Bcc: sam@internet.com
Subject: Hello
Body: Hi guys

would that Rule send the message through to john@abc.com, or would it be totally discarded by virtue of it containing bob@acme.com?

20120131-EE-VQP-002

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