On Sun, 11 Jan 1998, Michael Sokolov wrote:
>    What do you mean by "email"? It can mean three different things:
> receiving incoming SMTP mail and delivering it to mailboxes, serving POP
> clients, and relaying SMTP for machines that can't send mail directly to
> the recipient, only to a relay. 

Breaking up mail tasks into just 3 catagories causes some problems...

Here is how I break things up:

MX		- accepts mail from non-local systems
RELAY		- delivers mail to non-local systems
SMTP		- accepts mail from local clients (pop3 or imap4 users)
BACKEND		- serves users mailboxes
POP3/IMAP4	- interfaces with local clients

The situation you are trying to avoid is having a machine that talks to
both end users -and- internet hosts.  This minimizes load and reduces your
exposure to downtime.

Of course, for low numbers of users, none of this stuff makes much of a
difference.  Serving 100s or 1000s of users on a single box isn't a real
big deal.

Isn't email fun! 

/* 
   Matthew N. Dodd		| A memory retaining a love you had for life	
   winter@jurai.net		| As cruel as it seems nothing ever seems to
   http://www.jurai.net/~winter | go right - FLA M 3.1:53	
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