Automatic forwarding is disabled in mail box

Absolutely right, thank you for your comment, Brandon. Nevertheless, our company is always not on the latest updates. :-) 

Regards, Stephan

Definitely worth a shot... but may be overruled by the policy.  That said, I just remembered that Microsoft updated a setting last year related to this, so your email admin may not even be aware that this setting is enabled.  Details here: https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/outbound-spam-policies-external-email-forwarding?view=o365-worldwide 

Hi,

Do you think it is not permitted to transfer them via a rule from mail box as well? Especially Outlook also provides the possibility to automatically forward them to a zendesk account.

Regards, Stephan

Hey There - 

This does present a challenge.  The first step would be to determine if your email administrator can carve out an exception for the Zendesk domain to allow for this as a one-off scenario.  Another thing to know is whether you are using Outlook or Gmail.  Gmail uses IMAP natively, but otherwise your options are fairly limited.  Hope this helps!

Brandon