[Mailman-Users] Newbie question

Rob Jolliffe robert at creativemfg.ca
Mon Dec 23 21:39:38 CET 2002

Hi everyone,

I have a bandwidth question.  My searches of the archives and google turned 
up very little.  I did see the one FAQ entry that seemed to deal with this - 
but I thought I should ask for clairification.

Here is my question.  [Perhaps it's even more an SMTP question than a mailman 
question, if so please point me to the right list or newsgroup.]

I have a list with 1000 members on Yahoo groups (yech!).  I want to move this 
list on to my own server.  My SMTP server is going to be my ISP's server (I 
will be double checking with them) not my own.  When I send a 10k message to 
the 1000 users,  will my Mailman send a single message to the SMTP server 
with 1000 addresses attached (or 100 or 50 as per my configuration) or will 
it send 1 message per domain with the addresses attached?

If anyone is running such a list (about 40 to 60 messages per day,  maybe 5k 
average size,  1000 users) what bandwidth do you find is sufficient.  Just 
doing the straight math results in a requirement of 1 Mb per minute (174kB 
per second) upload speed to deliver messages within a 5 minute window.  This 
is pretty high bandwidth imho.  Does a mailing list really require this kind 
of thruput?

Thanks very much


Robert Jolliffe
President, Creative Manufacturing Solutions
Technology Partner, Dynac Inc.
www.creativemfg.ca  www.dynactools.ca

tel (519)585-7524

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