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

Michael Anderson mpanderso at cox.net
Sun Sep 2 00:10:05 CEST 2007

We changed our Sendmail configuration to send out one message at a time and
it seems to be working fine so far. Thanks for all the help.


> From: Mark Sapiro <msapiro at value.net>
> Organization: Not Very Much
> Date: Sat, 1 Sep 2007 15:02:12 -0700
> To: Michael Anderson <mpanderso at cox.net>
> Cc: Mailman Users <mailman-users at python.org>
> Subject: Re: [Mailman-Users] Comcast, Yahoo, Hotmail blocking us
> Michael Anderson wrote:
>> I can't imagine that sending one message at a time to 1500 users on a real
>> busy listserv would be a good idea.. Could it not really be slow?
> Well, you asked how to slow it down ...
> 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.
> 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.

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