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Open Source for the Enterprise by Gautam Guliani, Dan Woods

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Opportunities for IT Use of Open Source Email Products

Given the history of email adoption in enterprises, most IT departments in midsize to large companies are running Microsoft Exchange on the server and Microsoft Outlook on the desktop. Remote users or users checking email from home are using Outlook Web Access or Outlook Express.

We can subdivide each of these into three scenarios:

  • You are using almost all the capabilities of Exchange, and while this is fine in terms of basic email and collaboration, you are overwhelmed by virus outbreaks via email attachments or are drowning in spam. The primary challenges in this scenario are managing increasingly frequent virus outbreaks and managing the nightmare of spam. Integrating open source content scanners into this environment can provide immediate relief on both fronts. A few specific examples are:

    • Creating a secure mail gateway, or a mail firewall, that will shield Microsoft Exchange or Lotus Notes from direct contact. This mail gateway can perform content filtering, including removing viruses and Microsoft Outlook exploits, and identify spam. This can be implemented using Postfix, SpamAssassin, or Anomy Sanitizer. This allows enterprises to implement short-term relief from viruses and spam, and immediately cuts the number of person hours that IT staff and end users spend dealing with the problem.

    • The SpamBayes Outlook plug-in can be deployed to users’ desktop machines as a second-layer protection against spam. This can help catch any ...

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