Mailcow
mail.lars-lehmann.net is a mail server for receiving and sending emails, additionally it can be used as a central calendar and contact server for different devices.
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Mail Gateway
As a central setup for receiving and sending mails from different mail servers I run a mail gateway setup consisting of the following two nodes
mx.lars-lehann.net (Nuernberg, Germany)
IPv4: 213.95.149.188
IPv6: 2001:780:250::cafe
mx.larsl.de (Nuernberg, Germany)
IPv4: 144.91.120.39
IPv6: 2a02:c207:3004:6841::1