add impress.md for Deutsche Telekom

content/impress.md

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+title = "impress"
+description = "impress for ullmann.space"
+date = "2021-06-18"
+author = "Rico Ullmann"
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+
+# impress / contact information
+
+ullmann.space is my personal page. It does not expose a blog or other editorial content.<br>
+mail.ullmann.space is my personal mail server. It does not provide mail or other services to paying individuals/organisations. It may be used as a mail server for friends.
+
+Deutsche Telekom requires ["a website providing full contact details"](https://postmaster.t-online.de/index.en.html#t4.1) to accept emails from mail.ullmann.space. So here we go:
+
+Rico Ullmann<br>
+Hasengartenstraße 9A<br>
+65189 Wiesbaden<br>
+Germany
+
+Abuse address: abuse@ullmann.space<br>
+Phone: +49 611 98859495