Via the LRZ Service Desk
Open a ticket via the LRZ Service Desk: https://servicedesk.lrz.de/ and select the service Consulting/Beratung → Education and Training from the service tree.
Send an email to firstname.lastname@example.org.
If you want to send us a signed or encrypted message using S/MIME you can download our certificate (CN=GRP - Education and Training) here:
See also DFN-PKI.