Delete old outbound Notification mail

I probably face an XY problem here, but since upgrading I have an issue with notifications.
There was the discontinuation of simple auth from Microsoft, to fix it we re-setup the notification e-mail what worked well for quite some time. I guess this non-working outbound is the remaining of this.

Channel: Email::Notification out  
Can't use Channel::Driver::Smtp: 
#<Net::SMTPServerBusy: 432 4.2.0 
Failed to process message due to a transient exception 
with message [BeginDiagnosticData]The process failed to get the correct properties. 
[EndDiagnosticData] []\n>

But here is then the problem, how can I get rid of the pld notification e-mail and keep the one working?


  • Used Zammad version: 6
  • Used Zammad installation type:package
  • Operating system: Rocky
  • Browser + version: FF latest

Expected behavior:

  • Send notifications

Actual behavior:

  • does not send notifications

Steps to reproduce the behavior:

  • unknown