This issue occurs in newer Outlook 365 versions in combination with a on premise Exchange server. When the outlook client is configured, it sometimes asks to log in with your credentials into a 365 portal even when the email address doesn’t exist in Office 365. To solve this, we will need to add some registry …
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The CSR ( Certificate Signing Request) should get generated on the server which needs the certificate. The problem is that by default you can only generate a single named certificate. But there is a solution; use a custom powershell script. I found a great script made by Reinout Segers. You can find the script here. Just …
I’ve been using Telnet for a while now to test sending emails from a SMTP relay server. But if you are using a Windows server/client, the easier way is to use Powershell, as Telnet is unforgiving for syntax errors. If you are directly logged in to the SMTP server, you can use this PowerShell code: …
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DO NOT REMOVE THE LOGS BY MANUALLY DELETING THEM. This will cause exchange to crash and you will have a bad time restoring it. This guide works for Exchange 2007, 2010 and 2013. Other Exchange versions have not been tested by me, but should also work. To manually purge the files, follow these steps: Open …
When using Exchange 2010 there could be a moment where a message gets stuck in the message queue with the message: ‘A storage transient failure has occurred during content conversion‘. This is due to a transport/queue bug in Exchange 2010 The solution (more like a workaround) seemed quite simple: just enable TNEF. You can do …
This is an example of a Message Tracking command that I use most: Get-Messagetrackinglog -ResultSize Unlimited -Recipients:user@contoso.com -EventID “RECEIVE” -Start “09/25/2016 4:30:00 PM” -End “09/30/2016 5:17:00 PM” | select-object eventid,timestamp,messageid,sender,recipients,messagesubject | Out-GridView These are the parts that will improve search results and make it easier for you to understand the results: -ResultSize Unlimited specifies the …
When you add an SPF record to your domain’s DNS and still messages can be sent with non-user email adresses (spoofed), this is probably the reason: SPF is not fully propagated Your on-premise exchange does not have any anti-spam agents installed. You can check this with this Powershell command: Get-TransportAgent When the anti-spam agents are not …
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First of all, start the domain controller in safe mode (F8 at boot), where you can change the boot option back to normal. Do this with Run -> msconfig In the ‘boot’ section/tab in msconfig, you can turn off the safe boot in active directory mode. Then reboot, you can now log in normally. There …