new-ExchangeOnlineConnection.ps1
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function new-ExchangeOnlineConnection { param ( [Parameter(Mandatory = $false)] [string]$exchangeOnlineCertificateThumbPrint="", [Parameter(Mandatory = $false)] [string]$exchangeOnlineOrganizationName="", [Parameter(Mandatory = $false)] [string]$exchangeOnlineAppID="", [Parameter(Mandatory = $false)] [string]$msGraphEnvironmentName ) out-logfile -string "Entering new-ExchangeOnlineConnection" out-logfile -string "Determining the method of Exchange Online connection." if (($exchangeOnlineCertificateThumbPrint -eq "") -and ($exchangeOnlineOrganizationName -ne "") -and ($exchangeOnlineAppID -ne "")) { out-logfile -string "An Exchange Certificate Thumbprint is required when using Exchange Online Organiation Name and Exchange Online App ID." -isError:$TRUE } elseif (($exchangeOnlineCertificateThumbPrint -ne "") -and ($exchangeOnlineOrganizationName -eq "") -and ($exchangeOnlineAppID -ne "")) { out-logfile -string "An Exchange Online Organization Name is required when using an Exchange Certificate Thumbprint and Exchange Online App ID" -isError:$TRUE } elseif (($exchangeOnlineCertificateThumbPrint -ne "") -and ($exchangeOnlineOrganizationName -ne "") -and ($exchangeOnlineAppID -eq "")) { out-logfile -string "An Exchange Online App ID is required when specifying an Exchange Certificate Thumbprint and Exchange Online Organization Name." -isError:$TRUE } elseif (($exchangeOnlineCertificateThumbPrint -ne "") -and ($exchangeOnlineOrganizationName -ne "") -and ($exchangeOnlineAppID -ne "")) { out-logfile -string "Starting Exchange Online Certificate Thumbprint connection" try { Connect-ExchangeOnline -Organization $exchangeOnlineOrganizationName -CertificateThumbprint $exchangeOnlineCertificateThumbPrint -AppId $exchangeOnlineAppID -ExchangeEnvironmentName $msGraphEnvironmentName -ErrorAction STOP } catch { out-logfile -string "Unable to make Exchange Online Connection" out-logfile -string $_ -isError:$TRUE } } else { out-logfile -string "Starting Exchange Online Interactive Authentication" try { Connect-ExchangeOnline -ExchangeEnvironmentName $msGraphEnvironmentName -ErrorAction Stop } catch { out-logfile -string "Unable to make Exchange Online Connection" out-logfile -string $_ -isError:$TRUE } } } |