The standard way to open a ticket with OX Support is via email. For this purpose, the Customer gets a dedicated support key from Open-Xchange. When filing a ticket, the key has to be entered into the E-Mail to OX. This License Key controls the SLA in OX's ticket system.
The following article describes the information required by OX and provides a template for the email:
Only in case of Severity 1 and Severity 2 issues, OX's Support can also be alarmed via phone after submitting a ticket: