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DNS blacklist filters: Check inbound connection and look-up host in DNS
blacklist; log and reject message if determined to be from a known spamming
site.
A specific host is sending a large amount of spam to your server.
Inbound connection controls: Deny connection from this host.
A specific e-mail address is sending a large amount of spam to your server.
Inbound sender controls: Deny messages from this address.
External servers (spammers) are using your server as a relay.
Inbound relay controls: Close down your open relay, "Deny messages to be
sent to the following external domains: *" and "Deny messages from the
following internal hosts to be sent to external internet domains: *" (Note: *
means all).
Inbound relay enforcement: Change "Perform Anti-Relay enforcement for
these connecting hosts," to External hosts or All connecting hosts.
DNS blacklist filters: Check inbound connection and look-up host in DNS
blacklist; log and reject message if determined to be from a known spamming
site.
Messages are sent to users that are no longer with your company.
Inbound intended recipient controls: Enable "Verify that local domain
recipients exist in the Domino Directory" to deny messages for recipients not
listed in the Domino Directory, or list the e-mail address in the "Deny
messages" field.
Messages are being received containing offensive content.
Server mail rules: Create a rule to reject messages based on text of message,
body or subject.
User mail rules: Create a rule to reject messages based on text of message,
body or subject.
Internal SMTP servers/users are using your Domino 6 server as a relay.
Inbound relay controls: Close down your open relay, "Deny messages to be
sent to the following external domains: *" and "Deny messages from the
following internal hosts to be sent to external internet domains: *" (* means
all).
Inbound relay enforcement: Change "Perform Anti-Relay enforcement for
these connecting hosts" to "All connecting hosts."
Chapter 3. Domino 6 anti-spam architecture
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