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Spam/Virus Filtering $1/month per mailbox.
We can offer Postini's award winning spam and virus filtering for your domain[s] for a low price of $1/month per email box.
Hosts: This is a great service you can offer to your clients. Demo's and trial periods can be set up, please contact me!
I use spamassasin and it appears to be pretty good.
The mail still needs to be processed and delt with on the server. The Postini service allows this to be before it hits your server, basically saving you the bandwidth.
You mean saving you the CPU/memory time.
But it also saves bandwidth since Postini scans the message before it gets sent to your mail server. All "quarantined" (messages flagged as spam/virus) messages are not sent to the box unless the admin or the end user tell it to.
Ah, I see. Very True