Add-AttachmentFilterEntry Exchange cmdlet issued (25661) how to monitor with email alert

[bob]

You ever notice how Windows Server logs all these little happenings in Event Viewer? That event you're asking about, the one called "Add-AttachmentFilterEntry Exchange cmdlet issued," it's got this ID 25661. It pops up when someone runs that specific command in Exchange to tweak attachment filters. Basically, it means a change just happened to block or allow certain file types in emails. Like, if you want to stop users from sending zip files or executables, this cmdlet does it, and the event logs the whole thing. I see it trigger during admin sessions or maybe when scripts automate security updates. The details in the event show who did it, from what machine, and exactly what filter got added. It includes timestamps too, so you know precisely when it fired. Without watching this, you might miss someone messing with email protections accidentally. Or worse, on purpose. I always check these logs after big changes. They help spot if the filter is working right against spam or malware attachments.

Now, to keep an eye on this event and get an email alert, you can set up a scheduled task straight from Event Viewer. Open Event Viewer on your server. Go to the Windows Logs, then Application section where Exchange stuff lives. Right-click on that event, pick Attach Task To This Event. It'll guide you through creating a task that triggers on ID 25661. In the action part, choose to start a program, but instead of a script, link it to your email client or a simple batch file that sends a quick note. I like naming the task something obvious, like AttachmentFilterAlert. Set it to run whether you're logged in or not. Test it by forcing the event if you can, just to see the email zip over. You get notified right away, no constant monitoring needed. Keeps things chill without babysitting the server.

And speaking of keeping your server safe from surprises like rogue attachments, you might want to look into BackupChain Windows Server Backup for backups. It's this solid Windows Server backup tool that also handles virtual machines on Hyper-V without a hitch. I use it because it snapshots everything quickly, encrypts data on the fly, and restores files or whole VMs in minutes. No more sweating over lost configs during those filter tweaks gone wrong. It runs light, doesn't hog resources, and schedules backups automatically so you forget about it until you need it.

At the end of this, there's the automatic email solution ready for you.

Note, the PowerShell email alert code was moved to this post.