Verschlüsselte Verbindungen, ob imap, smtp, pop oder web sind nur solange sicher, wie verifiziert werden kann, dass sich der mit einem Zertifikat meldende Server tatsächlich unseren Erwartungen entspricht und nicht etwa ein ‘man-in-the-middle’ die vermeintlich verschluesselte Verbindung belauscht. Zu diesem Zweck gibt es nachfolgend eine Auflistung der von uns auf unseren Servern eingesetzten Zertifikate- und deren Fingerprints.


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

[
  {
    "subject_CN": "rage.so36.net",
    "subjectAltName": "DNS:imap.so36.net, DNS:mail.so36.net, DNS:pop.so36.net, DNS:pop3.so36.net, DNS:rage.so36.net, DNS:smtp.so36.net",
    "serial": "036259285203633F2A09FB3357D73A8BE6AC",
    "fingerprint_sha1": "f6f388a00755f4602b088f1b2221b556f87fd03b",
    "fingerprint_sha256": "3db071ac7a6491fca4cc33671d4b992c7a54548b84c3fb153bbef68b6ff81a16",
    "not_before": "2017-12-01 00:21:26 UTC",
    "not_after": "2018-03-01 00:21:26 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  },
  {
    "subject_CN": "webmail.so36.net",
    "subjectAltName": "DNS:webmail.so36.net",
    "serial": "03FEBE8C77FD8B0E6EA3BA75827C9AAE07F8",
    "fingerprint_sha1": "1849a80d65db345cfc18a427c73f53bd697573cb",
    "fingerprint_sha256": "8550ac1b915baf1ee12c4b86217c9d3f5d4bd2922463a96eae17512c396e4a0d",
    "not_before": "2017-11-30 00:21:11 UTC",
    "not_after": "2018-02-28 00:21:11 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  },
  {
    "subject_CN": "www.so36.net",
    "subjectAltName": "DNS:so36.net, DNS:www.so36.net",
    "serial": "031EB896E4DCC726EB2630FA45C58E862B6D",
    "fingerprint_sha1": "d992f9190a7edcd83feced8ae2ae1371be584c38",
    "fingerprint_sha256": "14ece5b6d5f16c419f2b4afe873a271880aef5656eaede648294fd83ce8f4740",
    "not_before": "2017-11-26 03:23:25 UTC",
    "not_after": "2018-02-24 03:23:25 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  },
  {
    "subject_CN": "codecoop.org",
    "subjectAltName": "DNS:codecoop.org, DNS:git.codecoop.org",
    "serial": "03C3AAE1149E7C1C5CA907152FD728FC3162",
    "fingerprint_sha1": "7457a45e2a1a2505c046268f88e57034de5be022",
    "fingerprint_sha256": "887c2a276c3836516e05e7b4f963a2be4c3239e209862ff55c93d9d7bd9efa17",
    "not_before": "2017-12-16 03:28:12 UTC",
    "not_after": "2018-03-16 03:28:12 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  },
  {
    "subject_CN": "jabber.so36.net",
    "subjectAltName": "DNS:jabber.so36.net",
    "serial": "033ED3B588855A3FEEAB1C8935BA56E51DAC",
    "fingerprint_sha1": "3d257b3b39ddfa0e2919a6531b9d384bddf0422d",
    "fingerprint_sha256": "1ba2652552a0ab7b21d4f0a5c44e18aeb97ee8c3b1a458de0547976a0c6e4900",
    "not_before": "2017-12-17 23:21:12 UTC",
    "not_after": "2018-03-17 23:21:12 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  },
  {
    "subject_CN": "talk36.net",
    "subjectAltName": "DNS:talk36.net",
    "serial": "0302A06B2080A3CC2D7A7868F82F371FA2B2",
    "fingerprint_sha1": "383115b376a8e45abeed8f67596361b2fe869ffa",
    "fingerprint_sha256": "f7b413add2ac41c0b707122f4b457e5fb8ad43c1c6b996c2af2e3fe76121c530",
    "not_before": "2017-12-10 23:21:13 UTC",
    "not_after": "2018-03-10 23:21:13 UTC",
    "issuer_CN": "Let's Encrypt Authority X3"
  }
]
-----BEGIN PGP SIGNATURE-----

iQIzBAEBCgAdFiEEfKikDabLk2zME7l4TQVh6fnb7hMFAlo6LboACgkQTQVh6fnb
7hPk7RAAqXO+EuPBpg9DVuFTLUN95Y4Ebh3+QGkPXan42UGKXSEntUr7CdP+QZQB
somm5YjZFe1p1EQ2Da/ADi12dRQaEuZNGWwM6Ley3r69UEvI15A19js7Voow7gK8
ayBiPTgd7+FIuMfoCw+5O6rMW1zzcj/5iOyW8kF6nuWvpeFXjmKVfcvIe6xATkpL
KxJyvCKMpc59Mpsz42aRS3QiNaefywTnBm/cUfH6VVwr06ZS4Nn9w+H6fUQctOQ+
lXIIOnFsv/H2yddcOntvIMpZ28if5fCGn6BoRE0jF2hWrmH/qLb3FqkF4naUOAI8
16edruRzpAbXEH7hLiccT/v0Y6qmARW9gwFXzhKHPwacKWA3KXZZpRvSnMqTV26+
4uUMtsXwxvZrn/Cz5FZoLI4TVn6B1Vt+NF9T+2g+sUtlz4+bd7TJ76i2uT62hK7j
ECNfXa5y7uLX/4RUELgPgzcOiPJmtH7840NoA1ch/z+um2IsOz0f6lOC6n27fEx8
Zm96x13kPIViiLPSVS0EMOwi7gdvu2Ykgwhhp+5/JO9UFwb+tOJdAMiLmpPEm1pz
8Y16Q69ro2rXF11YJcXojri7RPd8JwBhY51KbWdj4K9CoFxQzrQvmCrq9phkeYI8
ZpSYtchzLjdr3p8ICGyCSZ6xaUbN1bm9GexdF2GTicytAwdUz3g=
=Nklt
-----END PGP SIGNATURE-----