Spam filter statistics update
The procedure used to gather statistics of last month’s Spam filter statistics has been updated, it can now handle up to 100.000 messages (well, one less), and it now shows the number of messages that have been rejected, or accepted, by server or user rules, so those that won’t be scanned on their content by the program.
With this changed program, I rescanned the files of September:
PMAS statistics for September
Total messages : 10365 = 100.0 o/o
DNS Blacklisted : 1547 = 14.9 o/o (Files: 31)
Relay attempts : 7655 = 73.8 o/o (Files: 31)
Accepted by PMAS : 1163 = 11.2 o/o (Files: 31)
Handled by explicit rule
Rejected : 580 = 49.8 o/o (processed), 5.5 o/o (all)
Accepted : 200 = 17.1 o/o (processed), 1.9 o/o (all)
Handled by content
Discarded : 104 = 8.9 o/o (processed), 1.0 o/o (all)
Quarantained : 192 = 16.5 o/o (processed), 1.8 o/o (all)
Delivered : 87 = 7.4 o/o (processed), .8 o/o (all)
Halfway october, the result is:
PMAS statistics for October
Total messages : 7307 = 100.0 o/o
DNS Blacklisted : 1941 = 26.5 o/o (Files: 44)
Relay attempts : 3762 = 51.4 o/o (Files: 14)
Accepted by PMAS : 1604 = 21.9 o/o (Files: 44)
Handled by explicit rule
Rejected : 779 = 48.5 o/o (processed), 10.6 o/o (all)
Accepted : 300 = 18.7 o/o (processed), 4.1 o/o (all)
Handled by content
Discarded : 139 = 8.6 o/o (processed), 1.9 o/o (all)
Quarantained : 282 = 17.5 o/o (processed), 3.8 o/o (all)
Delivered : 104 = 6.4 o/o (processed), 1.4 o/o (all)
15-Sep-2010
Less Spam to control
A week ago, I added a number of rules in the spamfilter, to reject connection if the sender or subject contained particular words that were very frequent in the quarantained and , to a lesser extent, in discarded messages: Wolrds like “Gaming”, “casino”, “Viagra” – normally filtered by PMAS< now won't get that far: the connection is now silently dropped and these messages will not even reach the scanner.
Since then, the number of messages in quarantaine has dropped significantly: I have now less than half the number of quarantained messages - each day.
Not bad.
There is still something to check on the system - will do so next friday.