Signature files now tied to mailbox accounts

[icelava]

Don't know when but Outlook has been updated to only look for signature files suffixed with the mailbox address in use. Those without suffix are considered device-wide and cannot be used.

signature (my.emaill@address.net).htm

The downloaded and unzipped signature files must be renamed accordingly for Outlook to recognise them.

    if ($signatureFile.Name -like "*.htm" -or $signatureFile.Name -like "*.rtf" -or $signatureFile.Name -like "*.txt") {
        # Get file content with placeholder values
        $signatureFileContent = Get-Content -Path $signatureFile.FullName

        # Replace placeholder values
        $signatureFileContent = $signatureFileContent -replace "%DisplayName%", $userObject.DisplayName
        $signatureFileContent = $signatureFileContent -replace "%GivenName%", $userObject.GivenName
        $signatureFileContent = $signatureFileContent -replace "%Surname%", $userObject.Surname
        $signatureFileContent = $signatureFileContent -replace "%Mail%", $userObject.Mail
        $signatureFileContent = $signatureFileContent -replace "%Mobile%", $userObject.Mobile
        $signatureFileContent = $signatureFileContent -replace "%TelephoneNumber%", $userObject.TelephoneNumber
        $signatureFileContent = $signatureFileContent -replace "%JobTitle%", $userObject.JobTitle
        $signatureFileContent = $signatureFileContent -replace "%Department%", $userObject.Department
        $signatureFileContent = $signatureFileContent -replace "%City%", $userObject.City
        $signatureFileContent = $signatureFileContent -replace "%Country%", $userObject.Country
        $signatureFileContent = $signatureFileContent -replace "%StreetAddress%", $userObject.StreetAddress
        $signatureFileContent = $signatureFileContent -replace "%PostalCode%", $userObject.PostalCode
        $signatureFileContent = $signatureFileContent -replace "%Country%", $userObject.Country
        $signatureFileContent = $signatureFileContent -replace "%State%", $userObject.State
        $signatureFileContent = $signatureFileContent -replace "%PhysicalDeliveryOfficeName%", $userObject.PhysicalDeliveryOfficeName

        # Convert file name to explicitly target mailbox with email address suffix.
        $signatureFileTargetName = $signatureFile.BaseName + " (" + $userPrincipalName + ")" + $signatureFile.Extension
        # Set file content with actual values in $env:APPDATA\Microsoft\Signatures
        Set-Content -Path "$($env:APPDATA)\Microsoft\Signatures\$($signatureFileTargetName)" -Value $signatureFileContent -Force
    }