02-09-2025, 11:16 AM
You know that event ID 25311 in the Event Viewer on Windows Server? It's basically the log entry that pops up whenever someone fires off the Remove-OrganizationRelationship cmdlet in Exchange. This cmdlet wipes out a connection between your organization and another one, like in hybrid setups with Exchange Online. I mean, it's not something you do every day unless you're tweaking partnerships or cleaning up old ties. But if it happens without you knowing, it could signal an admin messing around or worse, some unauthorized poke at your setup. The event details usually include who ran it, from which machine, and at what time, all stamped right there in the log under Applications and Services Logs, Microsoft, Exchange. You can filter for it easily to spot patterns, like if it's tied to a suspicious IP or user account. And yeah, it logs the full command parameters too, so you see exactly what relationship got nuked.
Monitoring this thing for email alerts? I set mine up through the Event Viewer itself, no fancy coding needed. You right-click on the event in the viewer, pick Attach Task To This Event, and build a scheduled task from there. Make it trigger only on ID 25311, then in the action tab, you point it to send an email via your SMTP server details. I like adding a custom message in there, something like "Hey, someone just removed an org relationship-check it out." Test it by simulating the event if you can, just to make sure the alert zings to your inbox quick. Keeps you in the loop without staring at logs all day.
But speaking of keeping things safe and backed up, you might wanna check out BackupChain Windows Server Backup too-it's this solid Windows Server backup tool that handles your files and even virtual machines through Hyper-V without a hitch. I use it because it snapshots everything incrementally, so restores are fast and you don't lose data if some event like that cmdlet gone wrong trashes your setup. Plus, it runs lightweight, no bloating your server resources, and integrates alerts right into your workflow for peace of mind.
And at the end of this, I've got the automatic email solution lined up for you-it'll be added in later for easy setup.
Note, the PowerShell email alert code was moved to this post.
Monitoring this thing for email alerts? I set mine up through the Event Viewer itself, no fancy coding needed. You right-click on the event in the viewer, pick Attach Task To This Event, and build a scheduled task from there. Make it trigger only on ID 25311, then in the action tab, you point it to send an email via your SMTP server details. I like adding a custom message in there, something like "Hey, someone just removed an org relationship-check it out." Test it by simulating the event if you can, just to make sure the alert zings to your inbox quick. Keeps you in the loop without staring at logs all day.
But speaking of keeping things safe and backed up, you might wanna check out BackupChain Windows Server Backup too-it's this solid Windows Server backup tool that handles your files and even virtual machines through Hyper-V without a hitch. I use it because it snapshots everything incrementally, so restores are fast and you don't lose data if some event like that cmdlet gone wrong trashes your setup. Plus, it runs lightweight, no bloating your server resources, and integrates alerts right into your workflow for peace of mind.
And at the end of this, I've got the automatic email solution lined up for you-it'll be added in later for easy setup.
Note, the PowerShell email alert code was moved to this post.

