indexo.dev

tu-harburg.de

.de dns crawl

First seen 2026-05-18 · Last seen 2026-06-02 · error crawled 2026-06-02 5 attempts

Reputation 76/100 crawl error spf without fallback dmarc monitor-only

http error: [Errno -5] No address associated with hostname

Registration

Updated
2020-03-19
Name servers
  • authdns1.rz.tuhh.de.
  • authdns2.rz.tuhh.de.
  • dns-2.dfn.de.

DNS records live

NS
  • authdns1.rz.tuhh.de
  • authdns2.rz.tuhh.de
  • dns-2.dfn.de
MX
  • 15 smtp5.rz.tu-harburg.de
  • 25 smtp3.rz.tu-harburg.de
  • 5 smtp4.rz.tu-harburg.de

Email authentication weak

SPF
v=spf1 redirect=_spf.tuhh.de
missing all
DMARC
v=DMARC1; p=none; pct=100; rua=mailto:postmaster+dmarc@tuhh.de
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificates

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