Which way to go, GFI, Symantec, or Postini???

Hi experts,

I have to choose between three products for Virus Protection and SPAM Control.

Option one is to go with GFI.
Option two is to go with Symantec Mail security and SMTP Gateway.
Option three is to go with Postini (http://www.postini.com).

Can an expert help me out keeping in mind the best performance and cost effectiveness?

If there are any known issues with any of them please let me know, because I have our Exchange 2003 installed on Clustered Nodes.

Thanks a lot in advance.
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mjalmassudAsked:
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munichpostmanCommented:
Hi,

I recommend Postini. My organisation is currently in the process of migrating Postini and I can tell you that if your firm is being plagued with Spam, then Postini or other managed service providers such as Frontbridge (www.frontbridge.com) are the best way to deal with unsolicited mail and viruses.

The beauty of the outsourced solution is that spam and viruses are stopped before they reach your network, thus saving vast amounts of bandwidth. The other good thing is that because Postini process so much mail (1 billion messages a month) they are usually the first to see new variants of mail viruses and new spam campaigns and can block them within minutes.

When it comes to dealing with Spam, solutions such as GFI ans SMSE have one major weakness, their spam filtering is nearly always content and rule based. Postini, frontbridge and Messaglabs (the market leaders in managed filtering) all use connection filtering as well as content filtering. This is far more accurate, because they analyse the type of traffic that comes from each ipaddress, if they detect spam or viruses coming from a particular address they block the connection, and do not allow the ipaddress to reconnect until the majority of mail coming from that address are normal messages.

Connection based filtering is the most effective way of dealing with Spammers and Viruses. If your organisation has domains in non-english speaking countries, you will also find that off the shelf anti-spam solutions have a high false positive rate for foreign language mail.

The main reason we have decided to move to Postini is due to the amount of time my team spend on dealing with false-positives. The solutions we are using at the moment have a high detection rate, but also poor accuracy. It is the false positives which steal so much time with calls to the helpdesk, investigations, and manually having to release such mail and to explain to users why business mail was incorrectly tagged as Spam.

What we like about Postini is the fact that all mails which are marked as Spam are stored in a personal web quarantine area for the users, which they can easily release themselves. Users are also able to create personal white and blacklists, thus making Spam management a user issue rather than an IT Department one.

Postini also offer the ablity to delegate Admin permissions to different admins, so in my organisation we intend to create three levels of Postini admins, Global Messaging, Country messaging and Country Helpdesk. This means that for the various domains managed by my organisation such as myorg.de, myorg.co.uk, myorg.fi, the country admins can independantly manage their own countries mail.

The ultimate driver for the Postini decision is that in my organisation, we believe that we should focus on the core role of my department which is managing the organisations messaging infrastructure, Spam is just an expensive, ever-changing nuisance and we would rather let companies whose core business is Spam deal with it.

You should still have an Exchange aware virus scanner on every server. SMSE is excellent, we use Sybari Antigen. www.Sybari.com



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mjalmassudAuthor Commented:
Thanks a lot man, that is great job.
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