Duplicate all email at SMTP level to another container

Posted on 2006-06-04
Last Modified: 2010-03-06
I have been given a very stringent task and don’t know how to proceed about.  I have an Exchange 2003 standard server running on Windows 2003 Standard server located behind a Hardened Linux firewall.  My configuration is that all the incoming and outgoing emails are received by the Postfix server running in the firewall.  Postfix receives all the emails scans them for viruses and spam then either hands the incoming emails to the Exchange server or forwards them to the recipients email server onto the Internet.  I have been asked to establish a public folder with restrictive access for the owner to view the contents only.  Intercept every single email that is processed through the network, weather incoming our outgoing, and create a duplicate of the email into the public folder established for this purpose.  I have created a public and established appropriate permission.  However, I don’t know how to go about intercepting emails at the SMTP level to redirect a copy into the public folder and process the original email so no one knows that email has been tempered with.  Does anyone have any idea how this can be done either at the Postfix level or the Exchange level.

Thank you in advance for helping me find a solution.
Question by:Abdulhassan
    1 Comment
    LVL 104

    Accepted Solution

    What you are talking about is journaling.

    Be aware that what the owner of the company wants to do may well be illegal in your location or industry. The privacy laws are quite tight in some places and being owner of the company doesn't make it legal. The users may have to be informed that it is going on. If someone is fired over the content of an email message, but wasn't informed that the monitoring was taking place, then the owner could be in legal hot water.


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