Windows Knowledge Base

[IIS Tutor] Windows Server 2003 Internet mail solution- SMTP Part Three

Configure SMTP in Multiple Internet Domains
If you are in a environment that has multiple domains, then there's requirement for this SMTP server to send and received email from/to both domains. This can be done by creating a Remote  Domain using  the SMTP wizard. Here are the steps:
1.Right-click on the Domain => New Domain
 

 

Picture-1 Create new Remote Domain

2.In the wizard, specify the domain type, here we choose Remote.(Note: Remote means one hosted by another server elsewhere to which mail should be forwarded)
3.Enter Name of the domain and Finish the wizard.
Now you have two domains, default local domain and remote domain- Kbdepot.com. Please note that
The properties for a remote domain are different from those of the default local domain. You can identify the domain type by description see Picture-2

Picture-2 Remote domain - Kbdepot.com
Remote Domain Properties
From the General Tab you can configure the following options. See Picture-3

Picture-3  Remote Domain General Properties
- Allow incoming mail to be relayed to this domain. By default, SMTP prevents
messages from being relayed to the remote domain unless otherwise specified
in the Access property page for the virtual server (covered in the next section).
Select this option to override the settings on the Access page and allow message
relay to the remote host.
- Send HELO instead of EHLO. Servers that support ESTMP (Extended SMTP) supply
a list of supported extensions when a connection is made using the EHLO command,
rather than the standard HELO command. Servers that do not support ESMTP
generate an error when a connection attempt is made using EHLO instead of HELO.
Select this option to have SMTP use standard HELO commands instead of EHLO
when connecting to the remote domain.
- Outbound security. Click this button to configure security options for the outbound
connection to the remote domain. Configure the type of authentication
(anonymous, basic, Integrated Windows Authentication, or TLS) and user
account or password required by the remote server, if any.
- Use DNS to route to this domain. Select this option to have SMTP attempt to
deliver messages directly to the remote host using DNS lookup, rather than forward
to a smart host for delivery.
- Forward all mail to smart host. Select this option to forward all messages for the
remote domain to the specified smart host. You can enter a fully qualified domain
name (FQDN) or IP address for the smart host. When entering an IP address,
enclose the address in brackets to identify the entry to SMTP as an IP address,
bypassing DNS lookup and speeding up the connection process. Specifying a
smart host in this field overrides the smart host setting, if any, specified in the
general properties for the virtual server for the selected remote domain only.

You can use the Advanced tab to configure which remote hosts use remote triggered delivery (ATRN, or
Authenticated TURN) to pull messages bound for them from the virtual server. Remote triggered
delivery enables the remote host to pull messages from the virtual server at its own designated
times to reduce network bandwidth utilization at peak times or to accommodate other administrative
or performance requirements on the remote host or network. Rather than attempt to
deliver messages waiting in the queue to these remote hosts, SMTP simply places the messages
in the queue and waits for the remote host to connect and issue an ATRN command to retrieve
the messages. The options on the Advanced page are self-explanatory. Please see Picture for snapshot of Advanced Tab.

Picture-4  Remote Domain Advanced Tab

[IIS Tutor] Windows Server 2003 Internet mail solution- SMTP Part One

[IIS Tutor] Windows Server 2003 Internet mail solution- SMTP Part Two