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Attachment Manager and Content Manager add headers when they quarantine an email message.Note that if you set Attachment Manager or Content Manager to block or blackhole a message, there are no message headers.If Attachment Manager quarantines a message, the message will not have normal spam headers. Instead, there will be only one header:X-pstn-disposition: quarantineIf the sender appears on the organization-based Approved Senders list, the message containing the attachment will be passed on to the recipient inbox. The header will look like this:X-pstn-attach-addresses: from sender@address.com (approved)X-CM: (name of triggered Content Manager filter)X-CM: ConfidentialBilling
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