Splunk Search

Monitoring email status

nonno_pinto
Explorer

Hi everyone!

My goal is to create an alert to monitor in ALL saved search if there's any email that no longer exist (mainly, colleagues that left the company or similar).

My idea was to search for the same patter of Mail Delivery Subsystem that happens when sending an email from Gmail (or any other) to a non-existing mail. Bud didn't find anything in _internal index, nor with a rest to saved search and index=mail is empty.

Amy idea?

Tags (3)
0 Karma
1 Solution

richgalloway
SplunkTrust
SplunkTrust

Are you trying to find errors send email *from* Splunk or using Splunk to find any email sending errors?  I'll assume the former for now.

Splunk logs email it sends in python.log.  Searching for "sendemail" should find them.  The only errors you're likely to find are failures to pass the email to the SMTP server.  Any failures beyond that point would be sent as mailer-daemon messages to the sending mailbox.  You'll only be able to search for those if you are Splunking the mailbox (not common).

---
If this reply helps you, Karma would be appreciated.

View solution in original post

richgalloway
SplunkTrust
SplunkTrust

Are you trying to find errors send email *from* Splunk or using Splunk to find any email sending errors?  I'll assume the former for now.

Splunk logs email it sends in python.log.  Searching for "sendemail" should find them.  The only errors you're likely to find are failures to pass the email to the SMTP server.  Any failures beyond that point would be sent as mailer-daemon messages to the sending mailbox.  You'll only be able to search for those if you are Splunking the mailbox (not common).

---
If this reply helps you, Karma would be appreciated.
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Monitoring AI Agents with Splunk Observability Cloud

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...

[Puzzles] Solve, Learn, Repeat: Tiling

This puzzle (first published here) is based on finding groups of tessellated tiles (inspired by floor tiles I ...

SOK it to Me: Top 3 Benefits of Using Splunk Operator on Kubernetes that’ll Make ...

    Thursday, July 9, 2026  |  11:00AM–12:00PM PDT Duration: 1 hour (includes Q&A) Managing can feel like a ...