How do I set SharePoint 2.0 to use an external smtp server.

When I add users to my main SharePoint site, it adds them but can?t
send the welcome message.

The error I get is:
The user or users have been added successfully, but there was an error
in sending the e-mail message. The server may not be set up correctly
to send e-mail. To verify that e-mail is configured correctly, contact
your server administrator.
 I told it to use an external SMTP server, but it isn?t working.
I went into IIS, went to the properties of the default site, which got
me into the SharePoint Central Administration.  The I clicked on
Configure E-Mail Server Settings.
I entered an external server (a hosted pop3/smtp server we use for
junk mail) in the box labeled: ?Outbound SMTP server?.  I also added
my personal email address on that server for the boxes labeled ?From
e-mail address?, and ?Reply-to e-mail address:?.

What is very strange is that it doesn?t have anywhere to put a
password, so how will it authenticate?
I prefer not to run a smtp server on my server (which is a windows
server 2003 box that also run terminal services, webdav sites, and
sharepoint 2.0).
What to do?

If there is now way to run with a external smtp server, then please
tell me how to setup the smtp server in IIS to only replay for
sharepoint and other programs running on that server only.

thanx in advnce

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Clarification of Question by sherpaj-ga on 18 Sep 2004 23:00 PDT

I found this, but it doesnt help:
http://www.microsoft.com/resources/documentation/wss/2/all/adminguide/en-us/stse04.mspx

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Clarification of Question by sherpaj-ga on 18 Sep 2004 23:07 PDT

I found this.   http://www.sharepointu.com/forums/How_to_send_email_notification_to_external_addresses/m_4336/tm.htm

i dont realy understand it, but i do know this.
The smtp server on our external email server will not allow replaying,
unless you authenticate first. It is a plesk server and there is no
way to send email any other way.

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Clarification of Question by sherpaj-ga on 20 Sep 2004 17:45 PDT

Can you tell me how to setup the internal smtp server so that it only
allows relaying for sharepoint, or at least for just the ip of that
server?

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Request for Question Clarification by aht-ga on 21 Sep 2004 10:20 PDT

sherpaj-ga:

Does the comment from blowdart-ga cover your needs?

sherpaj-ga:

Looks like you've pretty much found the answer already yourself. The
problem here is that Sharepoint can only use its internal/built-in
SMTP server or an external SMTP server that accepts anonymous relaying
to generate the confirmation e-mails. As you've already mentioned,
this requires that your external SMTP server be able to be configured
for anonymous relaying of messages that come from the Sharepoint
server. Since your external SMTP server will not allow anonymous
relaying, then it looks like you are stuck. Sorry!

You cheat.

Basically you run the SMTP service that comes with IIS, so you have an
SMTP server running on localhost. It's reasonably secure by default,
you can tweak it by start up the IIS admin tool, and looking at the
properties for the SMTP server, then click the access tab and set the
connection and relay properties accordingly.

Basically you want to set the properties under connection to be only
the list below and add 127.0.0.1 to the list. Under relay do the same.

Try sending an email through it to make sure it works.

Now, if you want to go through the external server for whatever reason
you can set the SMTP server to use a smart host, which causes it to
pick up emails sent to itself, then forward them on to the external
server for processing.  You can set the username and password used to
connect to the smart host by clicking the delivery tab in properties
and clicking outbound security. You then specify the address of the
relay server by clicking the advanced button on the delivery tab and
entering the FQDN in the smart host box. If you only have an IP you
must enter it in the format [IP]