Triggers are working but no Email was sent

[codde]

Used Zammad version: 6.5.2
Used Zammad installation type: docker-compose
Operating system: Linux Ubuntu
Browser + version: Chrome 148.0.7778.97

Expected behavior:

When a new ticket was created the customer gets a mail notification to confirm the receipt of his tickets with its ticket id.
This is configured with a trigger.

Actual behavior:

The customer doen’t get a mail notification.

Steps to reproduce the behavior:

Every time I create a ticket, doesn’t care via mail (MS Graph) nor composing via web, no email comes to the customer.
I added some other action to the tigger like adding some article - that is working fine.

Side information

I’ve noticed mails sent via “automation” were processed like expected.

[MrGeneration]

Your production log should tell you if the trigger skipped and flr what reason.

6.5.2 has security advisories. Update to 6.5.5 or upgrade to 7.0.1 (latest stable) to secure your installation.

[codde]

Can I access that log via web GUI or only via the OS console?

[MrGeneration]

Only via console / SSH, correct.

[codde]

It’s solved.
The problem lay in the group’s configuration. No sender email address had been specified there. I assumed that a default address would be used instead. But it seems that this actually prevents any emails from being sent at all.
Once a sender email address was added to the group, the emails started working properly.