Notifications should include time stamp in message

[dsm1212]

This may be outside your control, I'm not sure what you are using to generate the messages.

The UPS shutdown emails sometimes don't get through until after the system is restarted. When received they appear as if they are happening now, not when the shutdown occurred. The text of the message should have the time in it so it is clear that it's an old message. This would probably be good for all notifications in case mail is in delay for other reasons.

[votdev]

The email is generated by nut upssched and out of the control of the OMV project.

[PrplHaz4]

It looks like upsmon controls the message and upssched the sending of the notification/email.

Does omv write/overwrite this .conf file? Or, would changing the message upstream even fix it for omv?

https://github.com/networkupstools/nut/blob/master/conf/upsmon.conf.sample.in

[votdev]

Does omv write/overwrite this .conf file? Or, would changing the message upstream even fix it for omv?

OMV is managing that configuration file, but it does not help to change the notification messages because upsmon does not provide the ability to use a placeholder for the date that will be filled with the current time of the notification at runtime. Only %s will be replaced by the configured UPS name at runtime. If you want that feature this must be implemented by the NUT project, but i fear that it will take ages until this feature appears in the Debian package that can be consumed by OMV finally.

The best is to find out why Postfix does not send the email before the shutdown.

[votdev]

This could be interested: https://forum.openmediavault.org/index.php?thread/45897-customize-nut-notifications/&postID=335349#post335349

You can customize the OMV_NUT_UPSSCHEDCMD_EMAIL_SUBJECT environment variable. Set it to foo bar - %d %h will produce the email subject foo bar - 15.01.2023 - mynas.local for example.

[dsm1212]

We just had a brief power outage so I have confirmation the OMV_NUT_UPSSCHEDCMD_EMAIL_SUBJECT including %h showed me the date and time of the event in the subject. Thanks!!!