On Sun, 18 Jan 1998, Nick Perry wrote:
) Presumably, you expect to be sending (in the 20k example), say, 20
) messages to 1000 people or 1 message to 20000 people rather than the
) other extreme of 20000 messages to 1 person. If so, then a mailing list
) that operates along the lines of majordomo & sendmail will have a far
) smaller impact than you might imagine. Sending a single 50k email
) message to 1000 AOL subscribers, for instance, will result in only one
) 50k message plus a list of 1000 addresses being sent to the AOL MTA,
) rather than 1000 50k messages each with one address.
Actually, that's rather untrue. sendmail breaks the recipient list up when
delivering a message.
For example, delivering a post for the vcpp@narnia.mhv.net mailing list,
with 365 subscribers, actually takes 16 envelopes. All outgoing mail
passes through mail.mhv.net, my providers mail server, but the message is
uploaded to mail.mhv.net 16 times.
That's with 365 subscribers.
16/365*1000 = ~44 split envelopes for your example, and at 50k apiece,
that's 2 and a quarter megabytes being delivered. Now, that's not the
almost 50 megabytes that would be delivered if it delivered the message to
each recipipent separately (like how qmail operates), but it's not the 50
kilobytes you'd think either.
--
Daniel Reed <n@narnia.n.ml.org> (3CE060DD)
System administrator of narnia.n.ml.org (narnia.mhv.net [199.0.0.118])
Misspelled? Impossible. My modem is error correcting!
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