Commands › Exchange Online
Test-SenderId
Test whether a specified IP address is the legitimate sending address for a specified SMTP address.
Quick start script
# Test-SenderId — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org
# 2. Run and inspect
Test-SenderId -IPAddress <IPAddress> -PurportedResponsibleDomain <SmtpDomain> | Format-List
# 3. Export for evidence / drift tracking
Test-SenderId | Export-Clixml .\SenderId-$(Get-Date -Format yyyyMMdd).xmlSyntax
Test-SenderId -IPAddress <IPAddress> -PurportedResponsibleDomain <SmtpDomain>
[-Confirm]
[-DomainController <Fqdn>]
[-HelloDomain <String>]
[-Server <ServerIdParameter>]
[-WhatIf]
[<CommonParameters>]Parameters (7)
| Parameter | Type | Required | What it controls |
|---|---|---|---|
| -IPAddress | IPAddress | yes | The IPAddress parameter specifies the originating IP address of the sending server. |
| -PurportedResponsibleDomain | SmtpDomain | yes | The PurportedResponsibleDomain parameter specifies the domain name that you want to verify with Sender ID. |
| -Confirm | SwitchParameter | The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on whether the cmdlet requires confirmation before proceeding. | |
| -DomainController | Fqdn | 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... | |
| -HelloDomain | String | The HelloDomain parameter specifies the domain address displayed in the HELO or EHLO SMTP commands from this sender. | |
| -Server | ServerIdParameter | 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: | |
| -WhatIf | SwitchParameter | The WhatIf switch shows what the command does without making any changes. You don't need to specify a value with this switch. |
Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.