Identity

Required

Microsoft.Exchange.Configuration.Tasks.SendConnectorIdParameter

The GUID or connector name that represents the Send connector you want to modify.

AddressSpaces

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The AddressSpaces parameter specifies the domain names to which the Send connector routes mail. The complete syntax for entering each address space is as follows: <AddressSpaceType>:<AddressSpace>;<AddressSpaceCost>

• AddressSpaceType: On an Edge server, the address space type must be SMTP. In the Transport service on a Mailbox server, the address space type may be SMTP, X400, or any other text string. If you omit the address space type, SMTP is assumed.
  
  
• AddressSpace: For SMTP address space types, the address space that you enter must be RFC 1035-compliant. For example, *, *.com, and *.contoso.com are permitted, but *contoso.com is not. For X.400 address space types, the address space that you enter must be RFC 1685-compliant, such as o=MySite;p=MyOrg;a=adatum;c=us. For all other values of address space type, you can enter any text for the address space.
  
  
• AddressSpaceCost: The valid input range for the cost is from 1 through 100. A lower cost indicates a better route. This parameter is optional. If you omit the address space cost, a cost of 1 is assumed. If you enter a non-SMTP address space that contains the semicolon character (;), you must specify the address space cost.
  
  

If you specify the address space type or the address space cost, you must enclose the address space in quotation marks ("). For example, the following address space entries are equivalent:

• "SMTP:contoso.com;1"
  
  
• "contoso.com;1"
  
  
• "SMTP:contoso.com"
  
  
• contoso.com
  
  

You may specify multiple address spaces by separating the address spaces with commas, for example: contoso.com,fabrikam.com. If you specify the address space type or the address space cost, enclose the address space in quotation marks ("), for example: "contoso.com;2","fabrikam.com;3".

If you specify a non-SMTP address space type on a Send connector configured in the Transport service on a Mailbox server, you must configure the following parameters:

• The SmartHosts parameter must be set to a value that specifies a smart host.
  
  
• The DNSRoutingEnabled parameter must be set to $false.
  
  

Note:

Although you can configure non-SMTP address spaces on a Send connector in the Transport service on a Mailbox server, the Send connector uses SMTP as the transport mechanism to send messages to other messaging servers. Foreign connectors in the Transport service on a Mailbox server are used to send messages to local messaging servers, such as third-party fax gateway servers, which don't use SMTP as their primary transport mechanism. For more information, see Foreign Connectors.

Specifies the domain names to which the Send connector routes mail. This parameter is required unless the connector is linked to a Receive connector. If a linked Receive connector is specified by using the LinkedReceiveConnector parameter, the value of the AddressSpaces parameter must be $null. The complete syntax for entering each address space is as follows: <AddressSpaceType>:<AddressSpace>;<AddressSpaceCost>

• AddressSpaceType   On an Edge server, the address space type must be SMTP. In the Transport service on a Mailbox server, the address space type may be SMTP, X400, or any other text string. If you omit the address space type, SMTP is assumed.
  
  
• AddressSpace   For SMTP address space types, the address space must be RFC 1035-compliant. For example, *, *.com, and *.contoso.com are permitted, but *contoso.com isn't permitted. For X.400 address space types, the address space that you enter must be RFC 1685-compliant, such as o=MySite;p=MyOrg;a=adatum;c=us. For all other values of address space type, you can enter any text for the address space.
  
  
• AddressSpaceCost   The valid input range for the cost is 1 to 100. A lower cost indicates a better route. This value is optional. If you omit the address space cost, a cost of 1 is assumed. If you enter a non-SMTP address space that contains a semicolon (;), you must specify the address space cost.
  
  

If you specify the address space type or the address space cost, you must enclose the address space in quotation marks ("). For example, the following address space entries are equivalent:

• "SMTP:contoso.com;1"
  
  
• "contoso.com;1"
  
  
• "SMTP:contoso.com"
  
  
• contoso.com
  
  

You may specify multiple address space entries by separating each with a comma, for example: contoso.com,fabrikam.com. If you specify the address space type or the address space cost, you must enclose the address space in quotation marks ("), for example: "contoso.com;2","fabrikam.com;3".

If you specify a non-SMTP address space type on a Send connector configured in the Transport service on a Mailbox server, the following settings are required:

• You must use a smart host to route email by specifying a value for the SmartHosts parameter.
  
  
• You must set the DNSRoutingEnabled parameter to $false.
  
  

Note:

Although you can configure non-SMTP address spaces on a Send connector in the Transport service on a Mailbox server, the Send connector uses SMTP as the transport mechanism to send messages to other messaging servers. Foreign connectors in the Transport service on a Mailbox server are used to send messages to local messaging servers, such as third-party fax gateway servers, which don't use SMTP as their primary transport mechanism. For more information, see Foreign Connectors.

AuthenticationCredential

Optional

System.Management.Automation.PSCredential

The AuthenticationCredential parameter specifies a credential object. This credential object is created by using the Get-Credential cmdlet. For more information about the Get-Credential cmdlet, enter Get-Help Get-Credential in the Exchange Management Shell.

CloudServicesMailEnabled

Optional

System.Boolean

Set to $true to enable this connector to send messages to the cloud service.

Comment

Optional

System.String

The Comment parameter specifies an optional comment. You must enclose the Comment parameter in quotation marks ("), for example: "this is an admin note".

Confirm

Optional

System.Management.Automation.SwitchParameter

The Confirm switch causes the command to pause processing and requires you to acknowledge what the command will do before processing continues. You don't have to specify a value with the Confirm switch.

ConnectionInactivityTimeOut

Optional

Microsoft.Exchange.Data.EnhancedTimeSpan

The ConnectionInactivityTimeOut parameter specifies the maximum time an idle connection can remain open. The default value is ten minutes.

To specify a value, enter it as a time span: dd.hh:mm:ss where d = days, h = hours, m = minutes, and s = seconds.

For example, to specify fifteen minutes, set it to 00:15:00. The valid input range for this parameter is 00:00:01 to 1.00:00:00.

DNSRoutingEnabled

Optional

System.Boolean

The DNSRoutingEnabled parameter specifies whether the Send connector uses Domain Name System (DNS) to route mail. Valid values for this parameter are $true or $false. The default value is $true. If you specify a SmartHosts parameter, the DNSRoutingEnabled parameter must be $false.

DomainController

Optional

Microsoft.Exchange.Data.Fqdn

The DomainController parameter specifies the fully qualified domain name (FQDN) of the domain controller that writes this configuration change to Active Directory.

DomainSecureEnabled

Optional

System.Boolean

The DomainSecureEnabled parameter enables mutual Transport Layer Security (TLS) authentication for the domains serviced by the Send connector when set to $true. Mutual TLS authentication functions correctly only if the following conditions are met:

• DomainSecureEnabled is set to $true.
  
  
• DNSRoutingEnabled is set to $true.
  
  
• IgnoreSTARTTLS is set to $false.
  
  

The wildcard character (*) isn't supported in domains configured for mutual TLS authentication. The same domain must also be defined on the corresponding Receive connector, and in the value of the TLSReceiveDomainSecureList attribute of the transport configuration.

The default value for the DomainSecureEnabled parameter is $false for the following types of Send connectors:

• Those defined in the Transport service on a Mailbox server.
  
  
• User-created Send connectors defined on an Edge server.
  
  

The default value is $true for a default Send connector defined on an Edge server.

The DomainSecureEnabled parameter is part of the process to enable mutual Transport Layer Security (TLS) authentication for the domains serviced by this Send connector. Mutual TLS authentication functions correctly only when the following conditions are met:

• The value of the DomainSecureEnabled parameter must be $true.
  
  
• The value of the DNSRoutingEnabled parameter must be $true.
  
  
• The value of the IgnoreStartTLS parameter must be $false.
  
  

The wildcard character (*) isn't supported in domains configured for mutual TLS authentication. The same domain must also be defined on the corresponding Receive connector and in the TLSReceiveDomainSecureList attribute of the transport configuration.

The default value for the DomainSecureEnabled parameter is $false for the following types of Send connectors:

• All Send connectors defined in the Transport service on a Mailbox server.
  
  
• User-created Send connectors defined on an Edge server.
  
  

The default value for the DomainSecureEnabled parameter is $true for default Send connectors defined on an Edge server.

Enabled

Optional

System.Boolean

The Enabled parameter specifies whether to enable the Send connector to process email messages. Valid values are $true or $false. The default value is $true.

ErrorPolicies

Optional

Microsoft.Exchange.Data.ErrorPolicies

The ErrorPolicies parameter specifies how communication errors are treated. Possible values are the following:

• Default   A non-delivery report (NDR) is generated for communication errors.
  
  
• DowngradeDnsFailures   All DNS errors are treated as transient.
  
  
• DowngradeCustomFailures   Particular SMTP errors are treated as transient.
  
  

Multiple values can be specified for this parameter, separated by commas.

Specify a value other than Default for this parameter only if this Send connector is used to send messages over a reliable and well-defined communication channel where communication errors aren't expected. For example, consider specifying a value other than Default if this Send connector is used to send messages to a partner.

Specifies how communication errors encountered by this Send connector are treated. Possible values are:

• Default   A non-delivery report (NDR) is generated for communication errors.
  
  
• DowngradeAuthFailures   All authentication and TLS errors are treated as transient.
  
  
• DowngradeDnsFailures   All DNS errors are treated as transient.
  
  

Multiple values can be specified for this parameter, with each separated by a comma.

Specify a value other than Default for this parameter only if this Send connector sends messages over a reliable and well-defined communication channel where communication errors aren't expected. For example, you may consider specifying a value other than Default if this Send connector is used to send messages to a partner.

Force

Optional

System.Management.Automation.SwitchParameter

The Force switch specifies whether to suppress warning or confirmation messages. This switch can be used when the task is run programmatically and prompting for administrative input is inappropriate. If the Force switch isn't provided in the command, you're prompted for administrative input. You don't have to specify a value with this parameter.

ForceHELO

Optional

System.Boolean

The ForceHELO parameter specifies whether HELO is sent instead of the default EHLO. Valid values are $true or $false. The default value is $false.

Fqdn

Optional

Microsoft.Exchange.Data.Fqdn

The Fqdn parameter specifies the FQDN used as the source server for connected messaging servers that use the Send connector to receive outgoing messages. The value of this parameter is displayed to connected messaging servers whenever a source server name is required, as in the following examples:

• In the EHLO/HELO command when the Send connector communicates with the next hop messaging server
  
  
• In the most recent Received header field added to the message by the next hop messaging server after the message leaves the Transport service on a Mailbox server or an Edge server
  
  
• During TLS authentication
  
  

The default value of the Fqdn parameter is $null. This means the default FQDN value is the FQDN of the Mailbox server or Edge server that contains the Send connector.

FrontendProxyEnabled

Optional

System.Boolean

The FrontendProxyEnabled parameter routes outbound messages through the CAS server, where destination specific routing, such as DNS or IP address, is set, when the parameter is set to $true.

IgnoreSTARTTLS

Optional

System.Boolean

The IgnoreSTARTTLS parameter specifies whether to ignore the StartTLS option offered by a remote sending server. This parameter is used with remote domains. This parameter must be set to $false if the RequireTLS parameter is set to $true. Valid values for this parameter are $true or $false.

IsScopedConnector

Optional

System.Boolean

The IsScopedConnector parameter specifies the availability of the connector to other Mailbox servers with the Transport service. When the value of this parameter is $false, the connector can be used by all Mailbox servers in the Exchange organization. When the value of this parameter is $true, the connector can only be used by Transport service on Mailbox servers in the same Active Directory site. The default value is $false.

MaxMessageSize

Optional

Microsoft.Exchange.Data.Unlimited

The MaxMessageSize parameter specifies the maximum size of a message that can pass through a connector. The default value is 25 MB.

When you enter a value, qualify the value with one of the following units:

• B (bytes)
  
  
• KB (kilobytes)
  
  
• MB (megabytes)
  
  
• GB (gigabytes)
  
  
• TB (terabytes)
  
  

Unqualified values are treated as bytes.

The valid input range for this parameter is 0 to 2147483647 bytes. To remove the message size limit on a Send connector, enter a value of unlimited.

Name

Optional

System.String

The Name parameter specifies the administrator-supplied name of the connector. You must enclose the Name parameter in quotation marks (") if the name contains spaces. For example, "New Send Connector".

Port

Optional

System.Int32

The Port parameter specifies the port number for smart host forwarding, if you specify a value in the SmartHosts parameter. The valid input range is an integer from 0 through 65535. The default value is 25. In most organizations, the port number is set to 25.

ProtocolLoggingLevel

Optional

Microsoft.Exchange.Data.ProtocolLoggingLevel

The ProtocolLoggingLevel parameter specifies whether to enable protocol logging. Verbose enables protocol logging. None disables protocol logging. The location of the Send connector protocol logs for all Send connectors configured in the Transport service on a Mailbox server or on an Edge server is specified with the SendProtocolLogPath parameter of the Set-TransportService cmdlet.

RequireOorg

Optional

System.Boolean

Reserved for internal Microsoft use.

RequireTLS

Optional

System.Boolean

The RequireTLS parameter specifies whether all messages sent through this connector must be transmitted using TLS. The default value is $false.

SmartHostAuthMechanism

Optional

Microsoft.Exchange.Data.Directory.SystemConfiguration.SmtpSendConnectorConfig+AuthMechanisms

The SmartHostAuthMechanism parameter specifies the smart host authentication mechanism to use for authentication with a remote server. Use this parameter only when a smart host is configured and the DNSRoutingEnabled parameter is set to $false. Valid values are None, BasicAuth, BasicAuthRequireTLS, ExchangeServer, and ExternalAuthoritative. All values are mutually exclusive. If you select BasicAuth or BasicAuthRequireTLS, you must use the AuthenticationCredential parameter to specify the authentication credential.

SmartHosts

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The SmartHosts parameter specifies the smart hosts the Send connector uses to route mail. This parameteris required if you set the DNSRoutingEnabled parameter to $false and it must be specified on the same command line. The SmartHosts parameter takes one or more FQDNs, such as server.contoso.com, or one or more IP addresses, or a combination of both FQDNs and IP addresses. If you enter an IP address, you must enter the IP address as a literal. For example, 10.10.1.1. The smart host identity can be the FQDN of a smart-host server, a mail exchanger (MX) record, or an address (A) record. If you configure an FQDN as the smart host identity, the source server for the Send connector must be able to use DNS name resolution to locate the smart-host server.

To enter multiple values and overwrite any existing entries, use the following syntax: <value1>,<value2>.... If the values contain spaces or otherwise require quotation marks, you need to use the following syntax: "<value1>","<value2>"....

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="<value1>","<value2>"...; Remove="<value1>","<value2>"...}.

SmtpMaxMessagesPerConnection

Optional

System.Int32

The SmtpMaxMessagesPerConnection parameter specifies the maximum number of messages the server can send per connection.

SourceIPAddress

Optional

System.Net.IPAddress

The SourceIPAddress parameter specifies the local IP address to use as the endpoint for an SMTP connection to a remote messaging server. The default IP address is 0.0.0.0. This value means that the server can use any available local IP address. This parameter is valid only for Send connectors configured on an Edge server.

SourceTransportServers

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The SourceTransportServers parameter specifies the names of the Mailbox servers that can use this Send connector. This parameter isn't valid for Send connectors configured on an Edge server.

To enter multiple values and overwrite any existing entries, use the following syntax: <value1>,<value2>.... If the values contain spaces or otherwise require quotation marks, you need to use the following syntax: "<value1>","<value2>"....

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="<value1>","<value2>"...; Remove="<value1>","<value2>"...}.

TlsAuthLevel

Optional

Microsoft.Exchange.Data.TlsAuthLevel

The TlsAuthLevel parameter specifies the TLS authentication level that is used for outbound TLS connections established by this Send connector. Valid values are:

• EncryptionOnly: TLS is used only to encrypt the communication channel. No certificate authentication is performed.
  
  
• CertificateValidation: TLS is used to encrypt the channel and certificate chain validation and revocation lists checks are performed.
  
  
• DomainValidation: In addition to channel encryption and certificate validation, the Send connector also verifies that the FQDN of the target certificate matches the domain specified in the TlsDomain parameter. If no domain is specified in the TlsDomain parameter, the FQDN on the certificate is compared with the recipient's domain.
  
  

You can't specify a value for this parameter if the IgnoreSTARTTLS parameter is set to $true, or if the RequireTLS parameter is set to $false.

Specifies the TLS authentication level that is used for outbound TLS connections established by this Send connector. Valid values are:

• EncryptionOnly   TLS is used only to encrypt the communication channel. No certificate authentication is performed.
  
  
• CertificateValidation   TLS is used to encrypt the channel and certificate chain validation and revocation lists checks are performed.
  
  
• DomainValidation   In addition to channel encryption and certificate validation, the Send connector verifies that the FQDN of the target certificate matches the domain specified in the TlsDomain parameter. If no domain is specified in the TlsDomain parameter, the FQDN on the certificate is compared with the recipient's domain.
  
  

You can't specify a value for this parameter if the IgnoreSTARTTLS parameter is set to $true, or the RequireTLS parameter is set to $false.

TlsCertificateName

Optional

Microsoft.Exchange.Data.SmtpX509Identifier

The TlsCertificateName parameter specifies the combination of the Issuer and Subject attributes of the Certificate Authority (CA) issued X.509 certificate used for secure mail. It is used to help authenticate the local certificate and to minimize the risk of fraudulent certificates. The Issuer portion of the TlsCertificateName value is derived from the certificate Issuer field. The Subject portion of the TlsCertificateName value is derived from the certificate Common Name field. For example, "X509:<I>Issuer<S>Common Name".

TlsDomain

Optional

Microsoft.Exchange.Data.SmtpDomainWithSubdomains

The TlsDomain parameter specifies the domain name that the Send connector uses to verify the FQDN of the target certificate when establishing a TLS secured connection.

This parameter is used only if the TlsAuthLevel parameter is set to DomainValidation.

A value for this parameter is required if:

• The TLSAuthLevel parameter is set to DomainValidation.
  
  
• The DNSRoutingEnabled parameter is set to $false (smart host Send connector).
  
  

UseExternalDNSServersEnabled

Optional

System.Boolean

The UseExternalDNSServersEnabled parameter specifies whether this Send connector uses the external DNS list specified by the ExternalDNSServers parameter of the Set-TransportService cmdlet. The default value is $false.

WhatIf

Optional

System.Management.Automation.SwitchParameter

The WhatIf switch instructs the command to simulate the actions that it would take on the object. By using the WhatIf switch, you can view what changes would occur without having to apply any of those changes. You don't have to specify a value with the WhatIf switch.