Xscreensaver errors
paul | Monday, 01 June 2020 | Raspberry Pi | Xscreensaver

When running the screensaver app Xscreensaver it displays the following errors:

xscreensaver: unable to find any alternatives to “-*-helvetica-bold-r-*-*-*-180-*-*-*-*-iso8859-1”
xscreensaver: unable to find any alternatives to “-*-helvetica-bold-r-*-*-*-140-*-*-*-*-iso8859-1”
xscreensaver: unable to find any alternatives to “-*-helvetica-bold-r-*-*-*-140-*-*-*-*-iso8859-1”
xscreensaver: unable to find any alternatives to “-*-helvetica-bold-r-*-*-*-140-*-*-*-*-iso8859-1”
xscreensaver: unable to find any alternatives to “-*-helvetica-medium-r-*-*-*-80-*-*-*-*-iso8859-1”
xscreensaver: unable to find any alternatives to “-*-helvetica-bold-r-*-*-*-120-*-*-*-*-iso8859-1”

This is due to creator of the Xscreensaver using a non-standard font in their application. It can be fixed by installing the following fonts.

sudo apt-get install t1-xfree86-nonfree ttf-xfree86-nonfree ttf-xfree86-nonfree-syriac xfonts-75dpi xfonts-100dpi

After reboot no more errors when the Xscreensaver runs.

Sending a test email from PowerShell
paul | Friday, 29 May 2020 | Powershell | smtp

When testing a SMTP email connection the tool I used to prefer was the Telnet client. It allowed you to manually type a conversation with the SMTP server and send an email if you remembered the commands and ordering. Today it is easier to test the connection using the PowerShell client built into all Windows machines. The following command will send a simple test email:

Send-MailMessage -To [email protected] -Subject "Test 1" -BodyAsHtml -Priority high -Smtpserver server-name -From [email protected] -Body "123"

The command should complete and send the email or error out.

There is detailed documentation of the Send-MailMessage command at: https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/send-mailmessage?view=powershell-7

Microsoft Teams enable meeting attendee report
paul | Thursday, 21 May 2020 | Office 365 | Teams

It is possible to enable an attendee report in Microsoft Teams via policy. The following PowerShell can be used with the Skype for Business Onine Windows PowerShell Module installed:

Import-Module SkypeOnlineConnector
$sfbSession = New-CsOnlineSession
Import-PSSession $sfbSession

# Allow attendee list download during meeting
Set-CSTeamsMeetingPolicy -Identity Global -AllowEngagementReport "Enabled"

This give the organiser an option to download an attendee report showing when users join and leave the meeting (but currently only available to run during the meeting).

Microsoft Teams lockdown backgrounds
paul | Thursday, 21 May 2020 | Office 365 | Teams

It is possible to lockdown what backgrounds can be set in Microsft Teams via policy. The following PowerShell can be used with the Skype for Business Onine Windows PowerShell Module installed:

Import-Module SkypeOnlineConnector
$sfbSession = New-CsOnlineSession
Import-PSSession $sfbSession

# Lockdown backgrounds policy. Possible values are: NoFilters, BlurOnly, BlurAndDefaultBackgrounds, AllFilters.
Set-CsTeamsMeetingPolicy -Identity Global -VideoFiltersMode BlurAndDefaultBackgrounds

This can prevent users from selecting inappropriate images as backgrounds in meetings.

Soti Mobicontrol and Android 10
paul | Tuesday, 19 May 2020 | Android | Mobicontrol

Android 10 does not accept SHA-1 signed certificates.

If you have been using the Soti Mobicontrol MDM server then check that the certificates it uses have been updated to SHA-256 or the Android 10 devices will not be able to communicate with the server.

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