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From: Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
Date: Fri Aug 29 2008 - 02:23:52 CDT
* shawn D.Wang <shawn.d.wanggmail.com>:
> Ralf, thanks for the quick response.
> Surely I will use multi recipients.
> I supposed the postfix will send a separate copy to each recipient.
No, not with multi-recipient mail.
> for instance：if i have two recipients, r1hotmail.com and r2yahoo.com, they
> are in different ISP, so postfix will transfer two times, once for the
> hotmail ISP, and another for the yahoo ISP. Am I right?
Yes. Of course.
> Or another way, optimisticly, I can only transfer one time, say, to
> hotmail ISP, and the mail sever receive this mail then find there is another
> recipent at yahoo ISP, so the hotmail mail sever on one hand, put the mail
> to its user, and on the other hand, continue with the transfering to yahoo
> ISP. But I believe the later one could never happen.
Correct. You need to do your own work.
> But if the two users are in the same ISP, how does the postfix transfer the
Once, with two recipients.
> The postfix only transfer once? and the receiver ISP distribute two
> copies separately two each user?
> is that mean, the for a message, the copy number the postfix will
> transfer does not depend on the recipient number (of course under the
> max recipient number limit),
> but depend on the ISP number in all the recipients? say, if I have a
> message with 5
> recipients: johnhotmail.com, leehotmail.com, marrygmail.com,
> shawngmail.com, kingyahoo.com, will the postfix only transfer 3
> copies for the message?
> That is the key point of my problem. if the answer is "yes", then I can
> use multi recipients in the same message but transfer only one copy,
> that would be so, so, good.
> On 8/29/08, Ralf Hildebrandt <Ralf.Hildebrandtcharite.de> wrote:
> > * shawn D.Wang <shawn.d.wanggmail.com>:
> > > Hi guys:
> > >
> > > I'm fresh at postfix. Resently, we have built the postfix for our web
> > > service. We would like to deliver some e-magzines to our registered
> > users.
> > > but the size of each magzine is over 1 M. but we have hundreds of
> > thousands
> > > users. As a result, the bandwidth is embarrassing.
> > Yes.
> > > Since most of our users use yahoo, Hotmail and some other huge ISP, so
> > > if we can just send one copy to certain number of users of the same
> > > ISP, the bandwidth could be saved a lot.
> > Do you use single recipient or multi recipient mails?
> > > just let the ISP themselves to distribute the mails to those users. Is
> > > there some method to deal with this problem？or just some configuration
> > > change can do？
> > Use multi recipient mails!
> > --
> > Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
> > snickebocharite.de
> > Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
> > http://www.arschkrebs.de I'm looking for a
> > job
> > Yes, and every single administrator that's configured their virus
> > scanner to bounce to envelope deserves a swift kick upside the head.
Ralf Hildebrandt (Ralf.Hildebrandtcharite.de) snickebocharite.de
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de I'm looking for a job
In German "invent-a-new-word-where-a-perfectly-good-one-already-exists" is
probably a word.