Rieger Mail
Email infrastructure for transactional system messages
Rieger Mail is the central email service of Rieger Systems GmbH. We provide this infrastructure to ourselves and our customers to reliably send automated system messages – such as invoices, reminders, or security notifications.
Only transactional emails (invoices, reminders, notifications)
No newsletter, no marketing, no advertising
Only in the context of an existing process or contract
Each sender uses their own subdomain (e.g. customer.rieger-mail.eu)
Which domains are legitimate?
These domains may appear in the context of transactional communication
Direct sending domain for emails from Rieger Systems.
Subdomain for emails from Rieger Systems via the rieger-mail.eu infrastructure.
Customers always use their own subdomains in the format customerxyz.rieger-mail.eu.
How to verify authenticity
3 steps to verification
Check full sender address
Check the full email address (not just the display name). Legitimate emails come from rieger-systems.eu, rieger-systems.rieger-mail.eu or customerxyz.rieger-mail.eu (customer-specific subdomains).
Check headers: DKIM/DMARC = pass
Copy the full headers and check: DKIM=pass? DMARC=pass? (if possible).
If uncertain: don't click, report
If you are unsure: don't click. Forward the email to abuse@rieger-systems.eu (ideally with full headers/EML).
What we never request
If this occurs: please classify as suspicious