Spam stats

I analysed my email in the last 24 hours.  I thought you guys and gals might be interested in my experience to benchmark your own.  If anyone else has some stats to compare I would be very interested.

Spam caught by spamassassin: 420 (68%)
Spam subsequently cauught by Outlook 2003 59 (9%)
Bounced emails from people I never sent mail to: 45 (7%)
Spam manually removed by me: 39 (6%)
Genuine mail: 64 (10%)

Total: 627

I have spamassassin set to a warning limit of 5 which is fairly open, I don’t want to risk blocking genuine mail.  Outlook 2003 seems to do a good job of finding spam, but when spamassassin went down last week I noticed the difference in my in-box so they are obviously picking up different mails.

The bounced emails are either viruses which have picked out my address in someones address book as a from address or spam which purports to come from my domain or one of the customers I am postmaster for.

http://www.appriver.com/ has real-time stats (including breakdown by type) and they are running about 80%

http://spamarrest.com/tryit/index.jsp shows it about 86%

http://www.brightmail.com/spamstats.html is around 66% only

Of course those are only the percentages blocked by those services. 

Even dealing with only the last 6% manually it is not something I look forward to.  Objectively with only 39 mails, at a max of 2 seconds each this is only a couple of minutes.  Yet subjectively it seems to be a drain on my time.  

As long as this continues I am OK with my automated tools.  In fact with email address authentication - and assuming spamassassin/outlook knows about it, I would expect a much higher percentage to get picked up.   

Bob
Textor