functions/Connect-EwsExchange.ps1
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function Connect-EwsExchange { <# .SYNOPSIS Establish a connection to Exchange using EWS. .DESCRIPTION Establish a connection to Exchange using EWS. The session is stored in the module scope and will automatically be used for subsequent requests. .PARAMETER Mailbox The email address to connect to. The correct server to contact will be determined using Auto-Discover based on this address. .PARAMETER Credential Alternative credentials to use for connecting to the server. .PARAMETER Impersonate Email address of the user to impersonate. Requires the highly sensitive "Impersonate" exchange privilege. .PARAMETER Version The exchange server version to connect to. Defaults to Exchange2013_SP1, only change for legacy server. This governs the compatibility mode and higher versions have greater performance. .EXAMPLE PS C:\> Connect-EwsExchange -Mailbox 'max.mustermann@contoso.com' Connect to Max' mailbox in the contoso domain. #> [CmdletBinding()] param ( [string] $Mailbox, [PSCredential] $Credential = [Management.Automation.PSCredential]::Empty, [string] $Impersonate, [Microsoft.Exchange.WebServices.Data.ExchangeVersion] $Version = [Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2013_SP1 ) begin { if (-not $Mailbox) { try { $windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent() $sidbind = "LDAP://<SID=" + $windowsIdentity.user.Value.ToString() + ">" $aceuser = [ADSI]$sidbind $Mailbox = $aceuser.mail.ToString() } catch { Stop-PSFFunction -String 'Connect-EwsExchange.FailedAutodetect.Email' -StringValues $windowsIdentity -EnableException $true -Cmdlet $PSCmdlet -ErrorRecord $_ return } } } process { #region Setting up the service Write-PSFMessage -String 'Connect-EwsExchange.ConnectionStart' -StringValues $Mailbox, $Version $exchangeService = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService($Version, [System.TimeZoneInfo]::Local) $exchangeService.Timeout = Get-PSFConfigValue -FullName 'MsgToEml.Connect.Timeout' $exchangeService.UseDefaultCredentials = $true if ($Credential -ne [Management.Automation.PSCredential]::Empty) { $exchangeService.UseDefaultCredentials = $false $exchangeService.Credentials = $Credential.GetNetworkCredential() Write-PSFMessage -String 'Connect-EwsExchange.AuthenticatingAs' -StringValues $Credential.UserName } try { Write-PSFMessage -String 'Connect-EwsExchange.AccessingMailbox' -StringValues $Mailbox $exchangeService.AutodiscoverUrl($Mailbox) } catch { Stop-PSFFunction -String 'Connect-EwsExchange.FailedAutodetect' -StringValues $Mailbox -EnableException $true -Cmdlet $PSCmdlet -ErrorRecord $_ return } if ($Impersonate) { Write-PSFMessage -String 'Connect-EwsExchange.Impersonating' -StringValues $Impersonate $exchangeService.ImpersonatedUserId = New-Object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $Impersonate) } #endregion Setting up the service #region Connection Test $testFolder = [Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Root try { $null = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($exchangeService, $testFolder) Write-PSFMessage -String 'Connect-EwsExchange.ConnectionSuccess' -StringValues $Mailbox } catch { Stop-PSFFunction -String 'Connect-EwsExchange.ConnectionFailed' -StringValues $Mailbox -EnableException $true -Cmdlet $PSCmdlet -ErrorRecord $_ return } #endregion Connection Test $script:EwsService = $exchangeService } } |