On 09/04/03 at 09:35 -0500, NetHead opined:
> Wasn't it Global Homes Webmaster <[EMAIL PROTECTED]> who once
> said...
>
> >Just to refresh my memory, you're setting up a SIMS server as an
> >outgoing SMTP relay for your network, with a W*Mail server for
> >incoming mail, right?
>
> No.
Sorry, I had you confused with another recent thread. Since your situation
is different, some of my earlier comments obviously don't fit.
> >> On the SMTP setup, I assume I set up as many sending channels as I
> >> want (at least one, right?) And I need at least one receiving
> >> channel?
> >
> >If you want your users to be able to use the server as an SMTP
> >relay, then yes, it needs channels for both receiving messages and
> >sending them on to their destinations. How many channels you enable,
> >both incoming and outgoing, depends on how many users you have and
> >the likelihood of two or more of them trying to send messages
> >simultaneously.
> >
>
> How does the number of sending and receiving channels affect the
> secondary's functionality in terms of merely "passing" mail on to the
> primary?
Depending on the amount of incoming mail you expect, you need enough
receiving channels to handle the traffic. One sending channel would
probably suffice but, again depending on the volume of mail and your
available bandwidth, more could be useful. If SIMS has two messages in its
queue to send on to your primary and two sending channels available, it can
send the messages simultaneously. If there's only one sending channel, it
would have to send them sequentially.
> >> so do I need to put it the same client IP list?
> >
> >You need to put IP addresses in the client hosts list of any and all
> >hosts you wish to allow to relay through the server. Since you won't
> >have any accounts set up, no one will be able to authenticate SMTP
> >sessions using either SMTP AUTH or POP-before-send so, as long as
> >'Relay for Clients Only' is enabled, the _only_ way anyone will be
> >able to relay messages is if they're sending from an IP address
> >that's in the client hosts list.
>
> Once again my tiny brain is having a hard time fitting this in. So long
> as "pecandeluxe.com" is on one side of the "mail equation" (either
> FROM:[EMAIL PROTECTED] or TO:[EMAIL PROTECTED]), it's not a "relay",
> right?
It is a relay, but it's one that you explicitly allow. As long as you're
accepting mail from other hosts and then turning around to send it to a
different host, it's a relay (IOW, the mail is not being delivered to a
local account on the secondary). You want to relay mail for your domain(s)
to your primary server, but you don't want to be an 'open' relay that
anyone can use to send mail from anywhere to anywhere. The '.smtp' line(s)
in your router allows relays to your primary, and only for mail addressed
to your domain(s). 'Relay for Clients Only' and a restrictive set of IP
addresses in the Client Hosts list ensure that you're not open to arbitrary
third party relays.
> So, even though the secondary is getting e-mail from some ip in Outer
> Mongolia, if the destination is [EMAIL PROTECTED], it will try to
> deliver the mail on to the primary, correct?
Correct, provided that the Outer Mongolian IP is not in a blacklist that's
being used by the secondary.
> Now, in the "Sending Options" section of SMTP Settings, do I choose
> "Directly to Recipients" or "via Foreigh Mail Server" (with my primary as
> the "foreign" server)? Or does is matter?
You'll probably want to send 'Directly to Recipients'. the 'via Foreign
Mail Server' option is for situations where you can't make direct
connections to destination servers, as in the case where an ISP doesn't
allow outgoing port 25 traffic.
> Is all of this simply
> controlled by the router setting:
> pecandeluxe.com=pecandeluxe.com.smtp
Yes. The '.smtp' simply tells SIMS to relay mail addressed to
pecandeluxe.com to the MX for pecandeluxe.com.
> I appreciate all of the comments I have received so far. They have really
> helped. I know I'm gonna lick this eventually!
Sorry again for adding to your confustication earlier.
--
Christopher Bort | [EMAIL PROTECTED]
Webmaster, Global Homes | [EMAIL PROTECTED]
<http://www.globalhomes.com/>
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