The virus stats on our home page show that 1.6% of all emails contain a virus. I know that number isn’t right because we’re only counting emails that actually make it to our virus scanners, and we have Postfix rules that reject a ton of viruses before it ever makes it that far. The real virus numbers are much higher.
Postini shows a ridiculous spike in virus traffic over the past month. Check out the “Viruses > Last Six Months” tab on their stats page. I’d like to say that I agree with Postini’s numbers based on the rejects I’ve seen at the SMTP-level since Sober.U and Sober.Y hit the Internet. But since our stats don’t take SMTP rejects into account, it is difficult to say exactly what real virus traffic we’re seeing.
I bet we can fix that 🙂
At Spam Arrest, we’re currently seeing about 1/8 messages either failing SPF or virus-infected. That number has more than doubled in the past three months.
We basically have to lump the numbers together since if a message fails SPF, like most of the phishing attempts do, we don’t bother with the virus check.