When you’re waiting for an important email that never arrives, it can be frustrating — especially when there’s no obvious reason. Sometimes, a mail server silently rejects a message, or a recipient’s mailbox is full. You won’t know unless you go digging into Postfix logs… every single day.
I got tired of that.
Why This Matters
Postfix is rock solid, but even with proper DKIM, SPF, and DMARC, bounces still happen — sometimes for perfectly valid messages. False positives can cause serious delays or even lead to missed opportunities if you don’t notice them in time.
For admins running their own mail servers, there’s often no easy way to monitor these bounce events unless you manually sift through logs.
My Solution
To reduce manual effort and gain better visibility, I created a lightweight script that:
- Parses recent bounce events from Postfix logs
- Summarizes the failures (e.g. invalid address, blocked by policy)
- Sends a daily report to your inbox
That way, you only get notified if something went wrong, and you don’t need to check logs every day.
Who It’s For
- Sysadmins running Postfix
- Self-hosted mail enthusiasts
- Anyone curious why email doesn’t reach its destination
If you want better insight into mail delivery issues — with minimal overhead — give it a try.
👉 Check out the GitHub repo here
