On 07/01/02 at 15:57, Chris Wagner wrote:
> Sorry again to sound like too much of a moron here, but I want to
> make sure that I understand some of the things that I've seen talked
> about here at SIMS discussions.
>
> First of all, here's our scenario.
>
> We have a 10-client peer-to-peer Mac-PC network being served mail and
> web from a Bondi machine running 8.6.
>
> I have SIMS setup with about 20 mailboxes so far and am using
> Macjordomo for a list-server.
>
> My questions are as follows:
>
> 1. What exactly is an open relay and how can I make sure that I am
> avoiding being used as one?
An 'open relay' is an SMTP server that allows 'third-party message relays.'
That is to say a message that is sent by a non-local user (e.g. a spammer)
to a non-local recipient (e.g. some poor schmuck in the spammer's address
database).
> 2. I've only setup SIMS to be functional thus far, but have not
> delved into more serious systems administration like routing. Any
> good suggestions on learning about routing or any posts here about it
> that I can look up and teach myself?
In SIMS' SMTP settings, make sure that 'Relay for clients only' is enabled
(checked) and enter the IP address(es) of computers for which you are
willing to relay (your LAN, etc.) in the Client Hosts lists. Your SIMS will
now only relay messages sent from Client Hosts addresses and you are
effectively closed to third-party relays.
You should also be running one of the 1.8 beta releases, if you're not
already. Even though it's technically a 'beta' version, 1.8b8 has been out
for a very long time and is extremely stable. There's also a
1.8b9d[something] on Stalker's FTP server (ftp.stalker.com) that a lot of
us are using without problems.
> 3. We are an extremely small organization, but SIMS serves us very
> well. I love the admin utility. I only have to restart the box every
> couple of weeks or so and I am gathering that this may be due to a
> few connectivity problems on our network. Is it normal to have to
> restart your machine every so often when running so many apps (I
> currently have about 5-6 loading on that box at startup - it's got
> 192MB).
My SIMS box stays up for months on end, but it's only running SIMS and
AutoShare. It's a 6150/66 running OS 8.6.
> 4. I'm really new to mail servers and don't have a lot of expertise
> there, but have been into small-scale networking for about 2-3 years
> now, so, can you guys take it easy on me? I mean, I know that you are
> all EXTREMELY knowledgable. But I'm really not when it comes to this.
Hey, no need to be defensive. 8^) We all started there at one time or
another (well, maybe not Bill Cole -- I suspect that he was decanted as a
fully-developed network engineer -- but he's the exception that proves the
rule... ;-] )
--
Christopher Bort | [EMAIL PROTECTED]
Webmaster, Global Homes | [EMAIL PROTECTED]
<http://www.globalhomes.com/>
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