----- Original Message -----
From: "RockettMan" <[EMAIL PROTECTED]>
To: "inFusion Support List" <[EMAIL PROTECTED]>
Sent: Thursday, October 05, 2000 11:50 AM
Subject: Re: [iMS] Server horsepower (again)
> > iMS has the great advantage of being able to configure a group of
servers to
> > act as a single server.
> I assume this is done through external load balancing, round robin,
> or other distribution of incomming connections to multiple SMTP
> servers using shared storage and SQL.
>
All you need to do is list all of the SMTP Servers as having the same
priority in the DNS...
>
> Let me try to restate my question...
> I do understand the difference between <CFMAIL> and
> <CFX_iMSMail>. What I don't understand is by what process mail
> that needs to be requeued by the SMTP server for some transient
> error such as a DNS lookup failure would be resent. Is the
> resending of this mail handled by SMTP or does SMTP pass this
> responsiblilty off to POST and if it is passed to POST, how does
> the SMTP server know where the POST server is if it is not local.
> Is this handled in one of the SMTP servers templates? If so, which
> one?
The SMTP does not ever send mail - that is the job of the POST Server. When
the POST Server finds a new message to be sent it inserts the message
information into its internal queue. When a thread is available it spawns a
thread to send the mail. If the mail delivery fails the message delivery
time is increased from the current time according to the server setting.
As for local/non-local it is up to the SMTP Server or whatever process you
have for putting mail into the POST queue to determine if the mail is local
or not. At any rate, whatever makes it into the POST queue should be only
non-local mail. If the mail is local in POST versions less than 1.5 then
the mail is sent from the POST Server to the SMTP Server for local delivery.
POST version 1.5 has Smart Delivery so the POST Server can save local mail
if need be.
Regards,
Howie
> -Chris
>
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