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DMARC: You shall not pass.

By this point, you should have tackled both the SPF, and DKIM entries for all of the services sending on your behalf. Well, that you are aware of anyway, there is always more to find and shortly shadow IT, and less than helpful third parties will soon be revealed.

DKIM: Auth me up Scotty

DKIM is discussed extensively by several sources, and this isn't an extensive breakdown of it, ultimately I have working knowledge of it so consider this my idiots guide to the galaxy. DomainKeys Identified Mail (DKIM) as a technology

SPF: Writing the wrongs

Correct and complete SPF configurations seem to escape the grasp and understanding of many a sysadmin, Managed Service Providers, and web developers; from the small business with often simple needs, through to larger firms with dedicated staff to deal with

Will the real Ashley Cooper please stand up?

I repeat, will the real Ashley Cooper please stand up? We're gonna have a problem here... So to set the scene here; we are presently in the back end of 2021 nearly two entire years since Coronavirus ran

Meraki: VPN and L2TP fix

Add-VpnConnection -AllUserConnection -Name "VPN Name" -ServerAddress "" -TunnelType "L2tp" -EncryptionLevel "Optional" -AuthenticationMethod "PAP" -L2tpPsk "PSK-Password" -Force -PassThru -RememberCredential Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\PolicyAgent&

NinjaRMM: IP Geolocation

So last year in the thick of Covid - a client requested a quick (and dirty) way to be able to identify endpoints outside of the UK for contractual purposes. Using Powershell and NinjaRMM it's relatively easy to

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