We've recently started upgrading our Spam filtering platform, so it's time to post some updated instructions. These days Spam messages account for 80%-90% of all email sent worldwide, generating a lot of clutter and in some cases, security threats. We strongly advise filtering mail before it gets to your mail server, and many of our clients have signed up for Spam filtering services with us.
Technology Advisor Blog
One of the services we provide to our clients is spam filtering. The goal is to stop the spam BEFORE it gets to the mail server so it doesn't wind up on the users' desktop, laptop, iPad, smart phone, etc.... Each month when we do the reporting and roll up the numbers, it's amazing how much volume there is. Overall, around 80% of all email traffic is flagged as spam. For some of our clients, this means blocking out tens of thousands of messages a month. I looked at our own domain yesterday, and in February, over 10,000 messages were blocked or quarantined, including 348 emails containing viruses.
In the first few weeks of using a spam filter, we know it's an inconvenience to have to approve senders when it would be obvious to anyone but a computer that it's mail that you want, but you'll be grateful to have the spam filter when you see all the clutter gone from your mailbox. Note that what appears in your quarantine is only the borderline spam content and that the rest of it is blocked in a "black hole". On average, across all the clients we actively manage, around 80% of all incoming mail is blocked or quarantined as spam!