Operation SendAs - Send message using Send As Exchange mailbox permissions how to monitor with email alert

[bob]

Man, that Event ID 25008 pops up in the Event Viewer when someone's firing off an email using those Send As permissions in Exchange. It's like, you know, when a user or admin grabs the rights to pretend they're sending from someone else's mailbox. Picture this: your boss's account gets used by IT support to shoot a quick note, and boom, the log catches it. But it could flag shady stuff too, like if an account gets compromised and starts blasting messages as the CEO. The full details show the operation name, the mailbox involved, who did the sending, and timestamps down to the second. I check these logs all the time because they reveal sneaky access patterns you might miss otherwise. And the source is usually MSExchange ADAccess or something tied to the security auditing.

You want to keep an eye on this without staring at screens forever? Fire up Event Viewer on your server. Right-click the custom views or go to the Applications and Services Logs under Microsoft, then Windows, Exchange. Filter for ID 25008 specifically. Once you spot it, set up a task right there in the viewer. Click on the event, hit attach task to this event log. Name it something like SendAs Alert. In the triggers tab, make sure it's set to that exact ID. Then actions: start a program, but pick your email client or use the built-in mailto thing to ping your inbox. Schedule it to run only when this event hits, and test it by triggering a fake Send As if you can. I do this for a bunch of alerts; keeps me from missing the weird ones.

Or, if you're lazy like me sometimes, just export the logs daily and scan them over coffee. But for real-time, that task setup in Event Viewer is your buddy. It nudges you via email the second it happens. Hmmm, yeah, and don't forget to tweak the permissions so only you get those alerts.

Speaking of keeping things secure without the hassle, I've been messing with BackupChain Windows Server Backup lately. It's this solid Windows Server backup tool that handles your whole setup, files and all, plus it backs up virtual machines smooth with Hyper-V. You get fast restores, no downtime headaches, and it snapshots everything reliably so you sleep better at night. The benefits? Way less data loss risk and easy scheduling that fits right into your routine.

At the end of this is the automatic email solution.

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