Commands › Exchange Online

Update-SafeList

Exchange Online ExchangeOnlineManagement Update-*

Update the safelist aggregation data in Active Directory. Safelist aggregation data is used in the built-in anti-spam filtering in Microsoft Exchange. EdgeSync replicates safelist aggregation data to Edge Transport servers in the perimeter network.

Quick start script

# Update-SafeList — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org

# 2. Capture the current state first — you cannot roll back what you never recorded
$before = Get-SafeList
$before | Format-List

# 3. Make the change (dry run first)
Update-SafeList -Identity <MailboxIdParameter> -WhatIf
Update-SafeList -Identity <MailboxIdParameter>

# 4. Verify and diff
$after = Get-SafeList
Compare-Object ($before | Out-String) ($after | Out-String)

Syntax

Update-SafeList [-Identity] <MailboxIdParameter>
 [-Confirm]
 [-DomainController <Fqdn>]
 [-EnsureJunkEmailRule]
 [-IncludeDomains]
 [-Type <UpdateType>]
 [-WhatIf]
 [<CommonParameters>]

Parameters (7)

Parameter	Type	Required	What it controls
-Identity	MailboxIdParameter	yes	The Identity parameter specifies the mailbox from which you want to collect safelist aggregation data. You can use any value that uniquely identifies the mailbox. For example:
-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...
-EnsureJunkEmailRule	SwitchParameter		The EnsureJunkEmailRule switch forces the junk email rule to be turned on for the mailbox if the rule isn't turned on already. You don't need to specify a value with this switch.
-IncludeDomains	SwitchParameter		The IncludeDomains switch specifies whether to include the sender domains specified by users in Outlook in the safelist aggregation data. You don't need to specify a value with this switch.
-Type	UpdateType		The Type parameter specifies which user-generated list is updated to the user object. Valid values for this parameter are SafeSenders, SafeRecipients, and Both. The default value is SafeSenders.
-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.