Antispam software transparent

we need a software which trace mail traffic transparently
we want to put a server between switch and hosting servers.
and we want to trace and block spam mails on this filter
is there any software like that ?
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JohnBusiness Consultant (Owner)Commented:
If you are doing spam control yourself, you need something like Barracuda Spam Control[google_na]email_security_search&grp=spam_general&ad=53160333501&kw=%2Bspam%20%2Bcontrol&gclid=CKesmuvZ88UCFZCEaQodPIgARA

Otherwise, use a hosted service like (excellent) or Hosted Exchange with spam control.

There is so much of it, that outsourcing is the best thing to do.
FireBallITAuthor Commented:

that is what we exactly search for but we are looking for an open source solution to edit what we need
JohnBusiness Consultant (Owner)Commented:
That is showing Barracuda as I recommended. The website does not give any useful information that I can see, so you should contact the vendor.

What do they do that Barracuda cannot do?
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FireBallITAuthor Commented:
alternative vendor ?
JohnBusiness Consultant (Owner)Commented:
Look for something like:    OR

There are many of these available. Look for a hosted solution.
FireBallITAuthor Commented:
theese are all outsourced services we want to do it in our systems with startup of an open source transparent mail proxy
JohnBusiness Consultant (Owner)Commented:
I could spend all day looking you. The field is huge and Outsourcing is the favored approach by far.

Go to the link you liked and contact the vendor to see if they can help you with the Barracuda solution (well known and capable).

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