Florian Kirstein Axel von der Ohe Patrick Ben Koetter Marc Schiffbauer

Email
DNS/DNSSEC
IT-Security
Out-Tasking
Administration

sys4 consults, plans and develops turn-key IT solutions. Email, security and administration are at the core. Our experts support, monitor and operate platforms and services on demand.

Our clients are mid-sized to large companies, computing centers, carriers, ISPs and government authorities.


References

Unitymedia
Datev
sailthru
Stadtsparkasse München
Baden Württemberg
Oberfinanzdirektion Niedersachsen
ROPA Maschinenbau
KEVAG Telekom
Profiflitzer

Partners

SpamTEQ
Avira
Abusix
Dovecot
Open Netlabs
Kolab

Organisations

Allianz für Cyber-Sicherheit
IT-Security made in Germany
TeleTrusT

Our Thinking

Read blog

Postfix Gateway with blind carbon copy Multiplicator

by Robert Schetterer on 05/04/2015

Here is an exotic postfix gateway feature I did. It shows how to setup bcc copy with multiple recipients.

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Cyrus SASL libsasl man page

by Patrick Koetter on 01/07/2015

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Cyrus SASL saslauthd man page

by Patrick Koetter on 01/07/2015

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sys4 AG
Franziskanerstraße 15
81669 Munich
Germany
+49 89 3090 4664
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