Here are the numbers for the University of Minnesota spanning the past
10 days or so (granted school is out, so the numbers are lower than normal):
3686050 MAIL FROM commands issued
3922455 RCPT TO commands issued
These are numbers ONLY for our MX servers (incoming mail where only systems
who look at our MX records should be connecting). It appears that we have
about a 1.064 to 1 ratio (almost all of our mail is single recipient mail).
This isn't exactly the same as below since several sets of MAIL FROM/RCPT TO
commands may exist in a single connection.
On Sat, May 31, 2003 at 10:46:45AM -0700, Scott Nelson wrote:
At 10:27 PM 5/27/03 +0200, Markus Stumpf wrote:
On Tue, May 27, 2003 at 12:49:41AM -0700, Scott Nelson wrote:
Still, if we knew the average number of recipients for spam
messages currently, and the average number for non-spam,
I used the maillog of one of our mailservers of the last 22 hours.
It saw
128582 RCPT TO commands in
110709 connections
the data is cleaned of 5 customers that did newsletter injects today
that consisted of about 100-250 recipients per connection).
Thanks, that's helpful.
From one of my mailservers;
3525 RCPT TO commands in
2794 connections
almost all of it to spamtrap addresses.
A considerably higher ratio, but still much less than 2:1.
Two data points - probably not enough to draw valid conclusions,
but still way better than zero data points. It would be nice
to see data from a domain with large numbers of users,
like aol or hotmail.
Scott Nelson <scott(_at_)spamwolf(_dot_)com>
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