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Misc-Exchange-Online.md

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Connect to Exchange Online with MFA

https://docs.microsoft.com/en-us/powershell/exchange/connect-to-scc-powershell?view=exchange-ps

https://outlook.office365.com/ecp > Hybrid > "The Exchange Online PowerShell Module..." > Configure > Install

Uninstall-Module ExchangeOnlineManagement Install-Module ExchangeOnlineManagement Import-Module ExchangeOnlineManagement

Connect to Exchange Online (Single Factor)

$UserCredential = Get-Credential Connect-ExchangeOnline -Credential $UserCredential -ShowProgress $true

Connect to Exchange Online (MFA)

Connect-EXOPSSession -UserPrincipalName user@email.com

Get Litigation Hold Status

Get-Mailbox user@tdomain.com | Format-List lit

Get inbox rules

Get-InboxRule -Mailbox "[email@address.com]" | Select Name, Description, Enabled, Priority, ForwardTo, ForwardAsAttachmentTo, RedirectTo, DeleteMessage

Update Recipient Limits on a single mailbox

Set-Mailbox kimakers@contoso.com -RecipientLimits 20

Update Recipient Limits on multiple mailboxes

(Get-Mailbox | Where-Object {$.RecipientTypeDetails -ne "DiscoveryMailbox"}) | % {Set-Mailbox $.Identity -RecipientLimits 10}

Update the default Recipient Limits for new mailboxes created in the future (all plans, tenant-level)

Get-MailboxPlan | Set-MailboxPlan -RecipientLimits 50 Set-TransportConfig -MaxRecipientEnvelopeLimit 50

Get UnifiedAuditLog, last 365 days

$mailbox="tony@company.com" $StartDate = (Get-Date).AddDays(-365) $EndDate = get-date $UnifiedAuditLog = Search-UnifiedAuditLog -UserIds $mailbox -StartDate $StartDate -EndDate $EndDate -SessionCommand ReturnLargeSet -ResultSize 5000 $UnifiedAuditLog | Select-Object CreationDate, UserIDs, Operations, AuditData | Export-Csv ($mailbox + "_UnifiedAuditLog.csv") -NoTypeInformation

Get MessageTrace

$userSMTP = "user@email.com" $Trace = @() $Trace += Get-MessageTrace -RecipientAddress $userSMTP -StartDate 02/17/2021 -EndDate 02/23/2021 $Trace += Get-MessageTrace -RecipientAddress $userSMTP -StartDate 02/17/2021 -EndDate 02/23/2021 $Trace | Select-Object Received, MessageTraceId, Size, SenderAddress, FromIP, RecipientAddress, ToIP, Subject, Status | Export-Csv -NoTypeInformation ("C:\logs" + $userSMTP.Split('@')[0] + "_messagetrace.csv")

List Security and Compliance Center configured alert policies

Get-ProtectionAlert | Format-List Name,Category,Comment,NotifyUser