Quarantine messages that contain malware or attachment that is password protected, encrypted or damaged
 
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Objective: Quarantine messages that contain malware or attachment that is password protected, encrypted or damaged 
Create the following rule for Mail transport protection: 
Condition 
•Type: Antivirus scan result 
•Operation: is not 
•Parameter: Clean 
Action 
Type: Quarantine message 
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        Move messages that failed an SPF check to a Junk folder
 
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Objective: Move messages that failed an SPF check to a Junk folder 
Create the following rule for Mail transport protection: 
Condition 
•Type: SPF result 
•Operation: is 
•Parameter: Fail 
Action 
•Type: Set SCL value 
•Value: 5 
Set the value according to the SCLJunkThreshold parameter of Get-OrganizationConfig cmdlet of your Exchange server. For more details, see the SCL threshold actions article. 
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        Verify email message suspicious from sender spoofing
 
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Objective: Verify email message suspicious from sender spoofing. If the message contains your own domain in the "From:" email header or Envelope sender, verify by SPF result. If SPF result is neutral, quarantine the message, log to events, and notify the administrator. 
Condition 
•Type: Envelope sender and From header comparison result 
•Operation: is 
•Parameter: Match 
•Type: SPF result - From header 
•Operation: is 
•Parameter: Neutral 
Action 
Type: Quarantine message, Log to events and Send event notification to administrator 
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        Drop messages from specific senders
 
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Objective: Drop messages from specific senders 
Create the following rule for Mail transport protection: 
Condition 
•Type: Sender 
•Operation: is / is one of 
•Parameter: spammer1@domain.com, spammer2@domain.com 
Action 
Type: Drop message silently 
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        Blocked IP list
 
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Objective: Quarantine message from an IP address on the Blocked IP list, notify the administrator and log the event. 
Details: If an email message arrives from an IP address on the Blocked IP list, <%PM%> will quarantine the message and notify you via email. You can then release the message from quarantine or delete it permanently. Otherwise, <%PM%> would drop the message without an option for action. 
Open Mail transport protection 
Condition 
•Type: Sender's IP address 
•Operation: is on the list 
•List: Blocked IP list 
Action 
Type: Quarantine message, Log to events and Send event notification to an administrator 
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        Customize pre-defined rule
 
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Objective: Customize pre-defined rule 
Details: Allow archive attachments in messages from specified IP addresses (internal systems, for example) while using the Forbidden archive file attachments rule 
Open the Mail transport protection rule set, select Forbidden archive file attachments and click Edit. 
Condition 
•Type: Sender's IP address 
•Operation: is not / is not any 
•Parameter: 1.1.1.2, 1.1.1.50-1.1.1.99  | 
 
        Message body
 
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Objective: Quarantine messages that contain certain strings in the Message body 
Create the following rule for Mail transport protection: 
Condition 
•Type: Message body 
•Operation: contains / contains one of, click Add type website URL or part of a URL 
Action 
Type: Quarantine message 
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        Store messages for non-existent recipients
 
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Objective: Store messages for non-existent recipients 
Details: If you want to have all messages to non-existent recipients quarantined (regardless of being marked by Antivirus or Antispam protection) 
Condition 
•Type: Recipient validation result 
•Operation: is 
•Parameter: Contains invalid recipient 
Action 
Type: Quarantine message 
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