Seemann, HenningGrimm, RüdigerKeller, Hubert B.Rannenberg, Kai2019-10-302019-10-3020033-88579-330-Xhttps://dl.gi.de/handle/20.500.12116/29596The concepts for secure e-mail are available for quite some time. Nevertheless only few users have adopted them. The classical concept of end-to-end e-mail security provides maximum theoretical security. But the effort to implement and enforce it at every client has limited the spreading of security and therefore the overall benefit. Centralized e-mail security overcomes this problem. A gateway between the internal and the public network provides security where it is needed - in the internet. This presentation reflects aspects like standards, integration, security policy, central virus detection, implementation efforts, and key-recovery as well as business requirements like reduced administration costs and optimized workflow.enText/Conference Paper1617-5468