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Managing Messages > Configuring relay control options
Configuring relay control options
Administrator Help | Forcepoint Email Security | Version 8.5.x
Functionality on the page Settings > Inbound/Outbound > Relay Control is used to prevent the unauthorized use of your mail system as an open relay by limiting the domains and IP address groups for which your server is allowed to relay mail. Protected domains are defined on the page Settings > Users > Domain Groups. Trusted IP address groups are defined on the page Settings > Inbound/Outbound > IP Groups.
Configure relay control settings on the page Settings > Inbound/Outbound > Relay Control as follows:
1.
This option is enabled by default.
2.
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Fail. The domain owner's SPF record does not authorize the sender host machine to send email for the domain.
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SoftFail. The domain owner's SPF record allows the sender host machine to send email for this domain, even though the host is not explicitly authorized to do so.
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Neutral. The domain owner's SPF record makes no statement as to whether the sender host machine is authorized to send email for the domain.
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None. The lack of definitive SPF information prevents an SPF check (e.g., an SPF record does not exist).
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PermError. A permanent error occurs (e.g., the SPF record has an invalid format).
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TempError. A transient error occurs (e.g., a DNS timeout).
These options are not marked by default.
3.
a.
Mark the check box Bypass SPF validation for senders in the following domain group
b.
4.
The default setting is Allow relays only for senders from trusted IP addresses. Allowing all outbound relays may create a security vulnerability in your system.
You must use the default setting if you use SMTP authentication.
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5.
The default setting is Allow relays only for senders from trusted IP addresses. Allowing all internal relays may create a security vulnerability in your system.
The default setting is required if you use SMTP authentication.
6.
The settings are saved.

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Managing Messages > Configuring relay control options
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