Public/TenantConnection/Connect-CustomerExchange.ps1
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function Connect-CustomerExchange { [CmdletBinding()] param ( [Parameter(Mandatory)] [string]$CustomerTenantId, [Parameter()] [bool]$Retry ) # Get SAM tokens if not already available begin { if (!$SAMTokens) { $SAMTokens = Get-SAMTokens } } # Generate a token for MS graph, and connect with it. process { try { # Try to re-use existing connections $ConnectionInformation = Get-ConnectionInformation -ErrorAction SilentlyContinue if ($ConnectionInformation.DelegatedOrganization -eq $Global:Tenant.DefaultDomainName -and $Global:ExchangeToken -and $Global:ExchangeToken.expirationDateTime -gt (Get-Date)) { Write-Host "Re-using existing EXO connection..." -ForegroundColor DarkGray return } else { Disconnect-ExchangeOnline -Confirm:$false -ErrorAction SilentlyContinue } } catch { throw "Failed to disconnect from Exchange Online: $_" } try { $Global:ExchangeToken = New-CustomPartnerAccessToken -Scopes 'https://outlook.office365.com/.default' -TenantId $CustomerTenantId } catch { throw "Failed to generate a token for Exchange Online: $_" } if ($Global:ExchangeToken) { if($Global:Tenant.CustomerId -ne $CustomerTenantId) { try { $Global:Tenant = Get-Tenants -TenantId $CustomerTenantId } catch { throw "Failed to get customer information: $_" } } try { Connect-ExchangeOnline -AccessToken $Global:ExchangeToken.access_token -ShowBanner:$false -DelegatedOrganization $Global:Tenant.DefaultDomainName -AppId "fa997c67-0d57-4882-bf3d-dfb16c40495c" } catch { if ($Retry -eq $true) { throw "Failed to connect to Exchange Online: $_" return } Write-Host "Failed to connect to Exchange Online - perhaps they have not consented to our application correctly? Trying.." -ForegroundColor Yellow Set-SAMConsent -CustomerTenantId $CustomerTenantId Connect-CustomerExchange -CustomerTenantId $CustomerTenantId -Retry:$true } } } } |