We're doing some testing w/ a W2k3 SE vm and would like to test the ability
for mail to be sent directly from the server without using Exchange. The VM
currently has an internal address on our network but I can give it an
external one if that helps in the matter.

IIS has been added as well as a Default SMTP server. Authentication has
been configured to "anonymous access" and relay has been set to allow "all
except the list below" with the list empty. This is a stand-alone server not
part of a domain so under the domain name for the SMTP settings all that's
listed is the server name. I've tried opening a telnet session to the mail
server and sending mail but emails aren't transmitted, even when the
recipient is the same as the sender. Am I missing a step or is something
misconfigured?

Portwise, to send outgoing mail the SMTP server needs to be able to accept
connections from LAN computers on its port 25. With the standard firewall it
needs no specific outbound setting.

Do not expose port 25 to the internet -at least not without without
authentication ON- or you'll be a spam relay.

If you want mail to be accepted by other SMTP servers these days, the public
IP address needs to be a static one (specifically, must not be part of a
known broadband or dialup dynamic-IP range) and the domain the mail is
purported to be from should have a PTR record for this IP. The PTR need not
point anywhere specific so long as it's valid.

"tuned" wrote:

> We're doing some testing w/ a W2k3 SE vm and would like to test the ability
> for mail to be sent directly from the server without using Exchange. The VM
> currently has an internal address on our network but I can give it an
> external one if that helps in the matter.
>
> IIS has been added as well as a Default SMTP server. Authentication has
> been configured to "anonymous access" and relay has been set to allow "all
> except the list below" with the list empty. This is a stand-alone server not
> part of a domain so under the domain name for the SMTP settings all that's
> listed is the server name. I've tried opening a telnet session to the mail
> server and sending mail but emails aren't transmitted, even when the
> recipient is the same as the sender. Am I missing a step or is something
> misconfigured?