SMTP Inbound Controls Verständnisfrage

[Jörg P.]

Moin,

ich kriege nicht auf die Kette, was der Unterschied folgender Konfigurationsoptionen in den SMTP Inbound Controls ist:

1. Inbound Relay Controls -> Allow messages only from the following internet hosts to be sent to external internet domains
http://www.ibm.com/support/knowledgecenter/SSKTMJ_9.0.1/admin/conf_settinginboundrelaycontrols_t.html sagt:

Specifies the hosts or domains that the Domino SMTP service allows to relay outbound Internet mail. If this field contains valid entries, Domino allows only servers matching these entries to relay. Message relays from other servers are denied. You can specify individual host names or a group name.

Enter host names or IP addresses to designate the sites that are authorized to use Domino to relay messages to recipients outside your local Internet domain. For example, if you enter renovations.com or ibm.com® in the field, Domino accepts messages for recipients in external Internet domains only from servers with host names that end in renovations.com or ibm.com. Domino rejects messages for external recipients from any server not listed in this field.

2. Inbound Relay Enforcement -> Exclude these connecting hosts from anti-relay checks
http://www.ibm.com/support/knowledgecenter/SSKTMJ_9.0.1/admin/conf_specifyingenforcementofinboundrelaycontrols_t.html sagt:

You create an exceptions list containing the IP addresses or host names of hosts that relay to any permitted domain. For each specified exception, the inbound relay controls will not be enforced. Enter the IP addresses or host names of hosts to be exempted from the restrictions specified in the Inbound relay controls section. You can also enter group names in this field.

Läuft das nicht auf das gleiche Hinaus? Worin unterscheiden sich diese Felder?
Schon mal Danke für ein wenig Erleuchtung.

Gruß
Jörg