An asterisk * in the title indicates the field is mandatory.
If a field has a default value, it is shown in the Description column.
If the field type is an array, the Field Name has a .[n] suffix, where n is the array index placeholder.
Object and array field names are listed to provide context. If a field belongs to an object or an array, the full field name is shown in dot separated notation.

Title		Description	Details
AdminDisplayName		The AdminDisplayName parameter specifies a description for the policy. If the value contains spaces, enclose the value in quotation marks (").	Field Name: AdminDisplayName Type: String
RotateOnDate			Field Name: RotateOnDate Type: String Format: date-time
DomainName *		The DomainName parameter specifies the domain in your organization that you want to enable DKIM message signing for. By default, DKIM message signing is enabled for the initial .onmicrosoft.com domain in the organization (for example, contoso.onmicrosoft.com). For custom domains that don't have DKIM messaging signing enabled, the DKIM signatures for the .onmicrosoft.com domain are added to messages.	Field Name: DomainName Type: String
OrganizationId			Field Name: OrganizationId Type: String
BodyCanonicalization		The BodyCanonicalization parameter specifies the canonicalization algorithm that's used to create and verify the message body part of the DKIM signature. This value effectively controls the sensitivity of DKIM to changes to the message body in transit. Valid values are: • Changes in empty lines at the end of the message body. Simple Only changes in empty lines at the end of the message body are tolerated.	Field Name: BodyCanonicalization Type: String
Selector1CNAME			Field Name: Selector1CNAME Type: String
Selector1KeySize			Field Name: Selector1KeySize Type: String
IncludeSignatureCreationTime			Field Name: IncludeSignatureCreationTime Type: Boolean
WhenCreatedUTC			Field Name: WhenCreatedUTC Type: String Format: date-time
PSShowComputerName			Field Name: PSShowComputerName Type: Boolean
IsDefault			Field Name: IsDefault Type: Boolean
HeaderCanonicalization		The HeaderCanonicalization parameter specifies the canonicalization algorithm that's used to create and verify the message header part of the DKIM signature. This value effectively controls the sensitivity of DKIM to changes to the message headers in transit. Valid values are: • Changes in case for header fields (not values). Simple No changes to the header fields are tolerated.	Field Name: HeaderCanonicalization Type: String
Status			Field Name: Status Type: String
	ObjectClass		Field Name: ObjectClass.[n] Type: Array
PSComputerName			Field Name: PSComputerName Type: String
Selector2CNAME			Field Name: Selector2CNAME Type: String
KeyCreationTime			Field Name: KeyCreationTime Type: String Format: date-time
KeySize		The KeySize parameter specifies the size in bits of the public key that's used in the DKIM signing policy. Valid values are 1024 or 2048. The default value is 1024.	Field Name: KeySize Type: String
NumberOfBytesToSign			Field Name: NumberOfBytesToSign Type: String
Selector2PublicKey			Field Name: Selector2PublicKey Type: String
Identity		The Identity parameter specifies the DKIM signing policy that you want to view. You can use any value that uniquely identifies the policy. For example: Name The domain name (for example, contoso.com). Distinguished name (DN) GUID	Field Name: Identity Type: String
DistinguishedName			Field Name: DistinguishedName Type: String
OriginatingServer			Field Name: OriginatingServer Type: String
Name			Field Name: Name Type: String
Algorithm			Field Name: Algorithm Type: String
Selector2KeySize			Field Name: Selector2KeySize Type: String
LastChecked			Field Name: LastChecked Type: String Format: date-time
Enabled *		The Enabled parameter specifies whether the policy is enabled. Valid values are: $true The policy is enabled. This is the default value. $false The policy is disabled.	Field Name: Enabled Type: Boolean
WhenCreated			Field Name: WhenCreated Type: String Format: date-time
ExchangeVersion			Field Name: ExchangeVersion Type: String
SelectorBeforeRotateOnDate			Field Name: SelectorBeforeRotateOnDate Type: String
Domain			Field Name: Domain Type: String
ObjectCategory			Field Name: ObjectCategory Type: String
SelectorAfterRotateOnDate			Field Name: SelectorAfterRotateOnDate Type: String
IsValid			Field Name: IsValid Type: Boolean
IncludeKeyExpiration			Field Name: IncludeKeyExpiration Type: Boolean
Selector1PublicKey			Field Name: Selector1PublicKey Type: String
WhenChanged			Field Name: WhenChanged Type: String Format: date-time
WhenChangedUTC			Field Name: WhenChangedUTC Type: String Format: date-time
ObjectState			Field Name: ObjectState Type: String
RunspaceId			Field Name: RunspaceId Type: String
Guid			Field Name: Guid Type: String
Id			Field Name: Id Type: String

Model: device/exchangeonline/DkimSigningConfig

Model Details: device/exchangeonline/DkimSigningConfig