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Set-PopSettings

This cmdlet is available only in on-premises Exchange.

Use the Set-PopSettings cmdlet to modify the configuration of the Microsoft Exchange POP3 service. This service exists on Exchange servers that have the Client Access server role installed, and is used by POP3 clients to connect to Exchange.

For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.

Syntax

Set-PopSettings
   [-AuthenticatedConnectionTimeout <EnhancedTimeSpan>]
   [-Banner <String>]
   [-CalendarItemRetrievalOption <CalendarItemRetrievalOptions>]
   [-Confirm]
   [-DomainController <Fqdn>]
   [-EnableExactRFC822Size <Boolean>]
   [-EnableGSSAPIAndNTLMAuth <Boolean>]
   [-EnforceCertificateErrors <Boolean>]
   [-ExtendedProtectionPolicy <ExtendedProtectionTokenCheckingMode>]
   [-ExternalConnectionSettings <MultiValuedProperty>]
   [-InternalConnectionSettings <MultiValuedProperty>]
   [-LogFileLocation <String>]
   [-LogFileRollOverSettings <LogFileRollOver>]
   [-LoginType <LoginOptions>]
   [-LogPerFileSizeQuota <Unlimited>]
   [-MaxCommandSize <Int32>]
   [-MaxConnectionFromSingleIP <Int32>]
   [-MaxConnections <Int32>]
   [-MaxConnectionsPerUser <Int32>]
   [-MessageRetrievalMimeFormat <MimeTextFormat>]
   [-MessageRetrievalSortOrder <SortOrder>]
   [-OwaServerUrl <Uri>]
   [-PreAuthenticatedConnectionTimeout <EnhancedTimeSpan>]
   [-ProtocolLogEnabled <Boolean>]
   [-ProxyTargetPort <Int32>]
   [-Server <ServerIdParameter>]
   [-SSLBindings <MultiValuedProperty>]
   [-SuppressReadReceipt <Boolean>]
   [-UnencryptedOrTLSBindings <MultiValuedProperty>]
   [-WhatIf]
   [-X509CertificateName <String>]
   [<CommonParameters>]

Description

You need to be assigned permissions before you can run this cmdlet. Although this topic lists all parameters for the cmdlet, you may not have access to some parameters if they're not included in the permissions assigned to you. To find the permissions required to run any cmdlet or parameter in your organization, see Find the permissions required to run any Exchange cmdlet.

Examples

Example 1

Set-PopSettings -Server "MBX01" -UnencryptedOrTLSBindings 10.0.0.0:110

This example configures the unencrypted or STARTTLS encrypted POP3 connection to the server named MBX01 by using the local IP address 10.0.0.0 on TCP port 110.

Example 2

Set-PopSettings -ProtocolLogEnabled $true -LogFileLocation "C:\Pop3Logging"

This example turns on POP3 protocol logging. It also changes the POP3 protocol logging directory to C:\Pop3Logging.

Example 3

Set-PopSettings -LogPerFileSizeQuota 2MB

This example changes the POP3 protocol logging to create a new log file when a log file reaches 2 megabytes (MB).

Example 4

Set-PopSettings -LogPerFileSizeQuota 0 -LogFileRollOverSettings Hourly

This example changes the POP3 protocol logging to create a new log file every hour.

Example 5

Set-PopSettings -X509CertificateName mail.contoso.com

This example specifies the certificate that contains mail.contoso.com is used to encrypt POP3 client connections.

Note: For single subject certificates or a SAN certificates, you also need to assign the certificate to the Exchange POP service by using the Enable-ExchangeCertificate cmdlet. For wildcard certificates, you don't need to assign the certificate to the Exchange POP service (you'll receive an error if you try).

Parameters

-AuthenticatedConnectionTimeout

The AuthenticatedConnectionTimeout parameter specifies the time to wait before closing an idle authenticated connection.

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

Valid values are 00:00:30 to 1:00:00. The default value is 00:30:00 (30 minutes).

Type:EnhancedTimeSpan
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-Banner

The Banner parameter specifies the text string that's displayed to connecting POP3 clients. The default value is: The Microsoft Exchange POP3 service is ready.

Type:String
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-CalendarItemRetrievalOption

The CalendarItemRetrievalOption parameter specifies how calendar items are presented to POP3 clients. Valid values are:

  • 0 or iCalendar. This is the default value.
  • 1 or IntranetUrl.
  • 2 or InternetUrl.
  • 3 or Custom.

If you specify 3 or Custom, you need to specify a value for the OwaServerUrl parameter.

Type:CalendarItemRetrievalOptions
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-Confirm

The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on if the cmdlet requires confirmation before proceeding.

  • Destructive cmdlets (for example, Remove-* cmdlets) have a built-in pause that forces you to acknowledge the command before proceeding. For these cmdlets, you can skip the confirmation prompt by using this exact syntax: -Confirm:$false.
  • Most other cmdlets (for example, New-* and Set-* cmdlets) don't have a built-in pause. For these cmdlets, specifying the Confirm switch without a value introduces a pause that forces you acknowledge the command before proceeding.
Type:SwitchParameter
Aliases:cf
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-DomainController

The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.

Type:Fqdn
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-EnableExactRFC822Size

The EnableExactRFC822Size parameter specifies how message sizes are presented to POP3 clients. Valid values are:

  • $true: Calculate the exact message size. Because this setting can negatively affect performance, you should configure it only if it's required by your POP3 clients.
  • $false: Use an estimated message size. This is the default value.
Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-EnableGSSAPIAndNTLMAuth

The EnableGSSAPIAndNTLMAuth parameter specifies whether connections can use Integrated Windows authentication (NTLM) by using the Generic Security Services application programming interface (GSSAPI). This setting applies to connections where Transport Layer Security (TLS) is disabled. Valid values are:

  • $true: NTLM for POP3 connections is enabled. This is the default value.
  • $false: NTLM for POP3 connections is disabled.
Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-EnforceCertificateErrors

The EnforceCertificateErrors parameter specifies whether to enforce Secure Sockets Layer (SSL) certificate validation failures. Valid values are:

  • $true: If the certificate isn't valid or doesn't match the target POP3 server's FQDN, the connection attempt fails.
  • $false: The server doesn't deny POP3 connections based on certificate errors. This is the default value.
Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-ExtendedProtectionPolicy

The ExtendedProtectionPolicy parameter specifies how Extended Protection for Authentication is used for POP3 connections. Valid values are:

  • None: Extended Protection for Authentication isn't used. This is the default value.
  • Allow: Extended Protection for Authentication is used only if it's supported by the incoming POP3 connection. If it's not, Extended Protection for Authentication isn't used.
  • Require: Extended Protection for Authentication is required for all POP3 connections. If the incoming POP3 connection doesn't support it, the connection is rejected.

Extended Protection for Authentication enhances the protection and handling of credentials by Integrated Windows authentication (also known as NTLM), so we strongly recommend that you use it if it's supported by your clients (default installations of Windows 7 or later and Windows Server 2008 R2 or later support it).

Type:ExtendedProtectionTokenCheckingMode
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-ExternalConnectionSettings

The ExternalConnectionSettings parameter specifies the host name, port, and encryption method that's used by external POP3 clients (POP3 connections from outside your corporate network).

This parameter uses the syntax HostName:Port:[<TLS | SSL>]. The encryption method value is optional (blank indicates unencrypted connections).

The default value is blank ($null), which means no external POP3 connection settings are configured.

To enter multiple values and overwrite any existing entries, use the following syntax: Value1,Value2,...ValueN. If the values contain spaces or otherwise require quotation marks, use the following syntax: "Value1","Value2",..."ValueN".

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="Value1","Value2"...; Remove="Value3","Value4"...}.

The combination of encryption methods and ports that are specified for this parameter need to match the corresponding encryption methods and ports that are specified by the SSLBindings and UnencryptedOrTLSBindings parameters.

Type:MultiValuedProperty
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-InternalConnectionSettings

The InternalConnectionSettings parameter specifies the host name, port, and encryption method that's used by internal POP3 clients (POP3 connections from inside your corporate network). This setting is also used when a POP3 connection is forwarded to another Exchange server that's running the Microsoft Exchange POP3 service.

This parameter uses the syntax HostName:Port:[<TLS | SSL>]. The encryption method value is optional (blank indicates unencrypted connections).

The default value is <ServerFQDN>:995:SSL,<ServerFQDN>:110:TLS.

To enter multiple values and overwrite any existing entries, use the following syntax: Value1,Value2,...ValueN. If the values contain spaces or otherwise require quotation marks, use the following syntax: "Value1","Value2",..."ValueN".

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="Value1","Value2"...; Remove="Value3","Value4"...}.

The combination of encryption methods and ports that are specified for this parameter need to match the corresponding encryption methods and ports that are specified by the SSLBindings and UnencryptedOrTLSBindings parameters.

Type:MultiValuedProperty
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-LogFileLocation

The LogFileLocation parameter specifies the location for the POP3 protocol log files. The default location is%ExchangeInstallPath%Logging\Pop3.

This parameter is only meaningful when the ProtocolLogEnabled parameter value is $true.

Type:String
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-LogFileRollOverSettings

The LogFileRollOverSettings parameter defines how frequently POP3 protocol logging creates a new log file. Valid values are:

  • 1 or Hourly. This is the default value in Exchange 2019 and Exchange 2016.
  • 2 or Daily. This is the default value in Exchange 2013 and Exchange 2010.
  • 3 or Weekly.
  • 4 or Monthly.

This parameter is only meaningful when the LogPerFileSizeQuota parameter value is 0, and the ProtocolLogEnabled parameter value is $true.

Type:LogFileRollOver
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-LoginType

The LoginType parameter specifies the authentication method for POP3 connections. Valid values are:

  • 1 or PlainTextLogin.
  • 2 or PlainTextAuthentication.
  • 3 or SecureLogin. This is the default value.
Type:LoginOptions
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-LogPerFileSizeQuota

The LogPerFileSizeQuota parameter specifies the maximum size of a POP3 protocol log file.

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 typically treated as bytes, but small values may be rounded up to the nearest kilobyte.

The default value is 0, which means a new POP3 protocol log file is created at the frequency that's specified by the LogFileRollOverSettings parameter.

This parameter is only meaningful when the ProtocolLogEnabled parameter value is $true.

Type:Unlimited
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MaxCommandSize

The MaxCommandSize parameter specifies the maximum size in bytes of a single POP3 command. Valid values are from 40 through 1024. The default value is 512.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MaxConnectionFromSingleIP

The MaxConnectionFromSingleIP parameter specifies the maximum number of POP3 connections that are accepted by the Exchange server from a single IP address. Valid values are from 1 through 2147483647. The default value is 2147483647.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MaxConnections

The MaxConnections parameter specifies the maximum number of POP3 connections that are accepted by the Exchange server. Valid values are from 1 through 2147483647. The default value is 2147483647.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MaxConnectionsPerUser

The MaxConnectionsPerUser parameter specifies the maximum number of POP3 connections that are allowed for each user. Valid values are from 1 through 2147483647. The default value is 16.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MessageRetrievalMimeFormat

The MessageRetrievalMimeFormat parameter specifies the MIME encoding of messages. Valid values are:

  • 0 or TextOnly.
  • 1 or HtmlOnly.
  • 2 or HtmlAndTextAlternative.
  • 3 or TextEnrichedOnly.
  • 4 or TextEnrichedAndTextAlternative.
  • 5 or BestBodyFormat. This is the default value.
  • 6 or Tnef.
Type:MimeTextFormat
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-MessageRetrievalSortOrder

The MessageRetrievalSortOrder parameter specifies how retrieved messages are sorted. Valid values are:

  • 0 or Ascending. This is the default value.
  • 1 or Descending.
Type:SortOrder
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-OwaServerUrl

The OwaServerUrl parameter specifies the URL that's used to retrieve calendar information for instances of custom Outlook on the web calendar items.

Type:Uri
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-PreAuthenticatedConnectionTimeout

The PreAuthenticatedConnectionTimeout parameter specifies the time to wait before closing an idle POP3 connection that isn't authenticated.

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

Valid values are from00:00:30 to 1:00:00. The default value is 00:01:00 (one minute).

Type:EnhancedTimeSpan
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-ProtocolLogEnabled

The ProtocolLogEnabled parameter specifies whether to enable protocol logging for POP3. Valid values are:

  • $true: POP3 protocol logging is enabled.
  • $false: POP3 protocol logging is disabled. This is the default value.
Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-ProxyTargetPort

The ProxyTargetPort parameter specifies the port on the Microsoft Exchange POP3 Backend service that listens for client connections that are proxied from the Microsoft Exchange POP3 service. The default value is 1995.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-Server

The Server parameter specifies the Exchange server where you want to run this command. You can use any value that uniquely identifies the server. For example:

  • Name
  • FQDN
  • Distinguished name (DN)
  • Exchange Legacy DN

If you don't use this parameter, the command is run on the local server.

Type:ServerIdParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-SSLBindings

The SSLBindings parameter specifies the IP address and TCP port that's used for an POP3 connection that's always encrypted by SSL/TLS. This parameter uses the syntax IPv4OrIPv6Address:Port.

The default value is [::]:995,0.0.0.0:995.

To enter multiple values and overwrite any existing entries, use the following syntax: Value1,Value2,...ValueN. If the values contain spaces or otherwise require quotation marks, use the following syntax: "Value1","Value2",..."ValueN".

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="Value1","Value2"...; Remove="Value3","Value4"...}.

Type:MultiValuedProperty
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-SuppressReadReceipt

The SuppressReadReceipt parameter specifies whether to stop duplicate read receipts from being sent to POP3 clients that have the Send read receipts for messages I send setting configured in their POP3 email program. Valid values are:

  • $true: The sender receives a read receipt only when the recipient opens the message.
  • $false: The sender receives a read receipt when the recipient downloads the message, and when the recipient opens the message. This is the default value.
Type:Boolean
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-UnencryptedOrTLSBindings

The UnencryptedOrTLSBindings parameter specifies the IP address and TCP port that's used for unencrypted POP3 connections, or POP3 connections that are encrypted by using opportunistic TLS (STARTTLS) after the initial unencrypted protocol handshake. This parameter uses the syntax IPv4OrIPv6Address:Port.

The default value is [::]:110, 0.0.0.0:110.

To enter multiple values and overwrite any existing entries, use the following syntax: Value1,Value2,...ValueN. If the values contain spaces or otherwise require quotation marks, use the following syntax: "Value1","Value2",..."ValueN".

To add or remove one or more values without affecting any existing entries, use the following syntax: @{Add="Value1","Value2"...; Remove="Value3","Value4"...}.

Type:MultiValuedProperty
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-WhatIf

The WhatIf switch simulates the actions of the command. You can use this switch to view the changes that would occur without actually applying those changes. You don't need to specify a value with this switch.

Type:SwitchParameter
Aliases:wi
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

-X509CertificateName

The X509CertificateName parameter specifies the certificate that's used for encrypting POP3 client connections.

A valid value for this parameter is the FQDN from the ExternalConnectionSettings or InternalConnectionSettings parameters (for example, mail.contoso.com or mailbox01.contoso.com).

If you use a single subject certificate or a subject alternative name (SAN) certificate, you also need to assign the certificate to the Exchange POP service by using the Enable-ExchangeCertificate cmdlet.

If you use a wildcard certificate, you don't need to assign the certificate to the Exchange POP service.

Type:String
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019

Inputs

Input types

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn't accept input data.

Outputs

Output types

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn't return data.