[Mailman-Users] Comcast, Yahoo, Hotmail blocking us

[Brad Knowles]

On 9/1/07, Mark Sapiro wrote:

>  OTOH, it won't be that slow. If your MTA as as blinding fast as you
>  say, I imagine that for moderate sized messages, say 10 KB, it would
>  take well under a minute to deliver to the MTA.

It all depends on how many recipients there are, how large the 
message is, and how many total deliveries are required to get all 
necessary copies of the message transmitted from Mailman to the MTA.

>  I don't know how many members are on the many lists at python.org, but
>  many of these lists have personalized and/or VERPed delivery and thus
>  send an individual message to each subscriber, and it doesn't seem to
>  be an issue there.

We currently have 128 lists, and the Top Ten largest lists are:

    3406 Python-list
    3316 Mailman-announce
    2997 Tutor
    2598 Mailman-Users
    1492 Python-announce-list
    1309 Python-Dev
     874 python-win32
     855 Pythonmac-SIG
     694 Image-SIG
     646 XML-SIG

Going back to May 2005, the Top Ten lists with the most traffic are:

   35787 python-list
   21220 python-dev
   18747 tutor
   16636 python-checkins
   13810 mailman-users
   11241 python-bugs-list
   10184 python-3000
    7754 python-help
    5790 patches
    5400 pythonmac-sig

The Top Ten fastest lists with the highest average delivery rates to 
the MTA are:

                                       total delivery
                      List     # msgs   time (secs)     Avg. rate
      --------------------   --------   ----------      -------------
                     Tutor   18629829 / 104001.403 =    179.131 msg/s
                Baypiggies     747203 /   4413.775 =    169.289 msg/s
              python-win32    1649983 /   9783.514 =    168.649 msg/s
                   C++-sig    1317540 /   7915.801 =    166.444 msg/s
                   Edu-sig     801584 /   5248.601 =    152.723 msg/s
      Python-announce-list    2002410 /  13363.320 =    149.844 msg/s
                  PythonCE     245065 /   1638.371 =    149.578 msg/s
              Python-ideas     131066 /    883.584 =    148.335 msg/s
                 Image-SIG     465971 /   3271.483 =    142.434 msg/s
             Distutils-SIG     610489 /   4330.037 =    140.989 msg/s


Now, we are a bit of a special case, since we dump all our outgoing 
mail on the ISP that provides hosting services for the Python.org 
machines (XS4ALL.nl), but as far as the rest of the numbers are 
concerned, I think they're fairly representative.

-- 
Brad Knowles <brad at shub-internet.org>
LinkedIn Profile: <http://tinyurl.com/y8kpxu>