SSL-Tools

SSL check results of rtl.de

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Discover if the mail servers for rtl.de can be reached through a secure connection.

To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.

Summary

JSON Refresh

Report created Mon, 08 Apr 2024 16:23:53 +0000

No connection to the mailservers of rtl.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @rtl.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
assur.rtl.de
193.16.163.11
Results incomplete
10
supported
mail.rtl.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
marduk.rtl.de
193.16.163.31
Results incomplete
10
supported
mail.rtl.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
sulis.rtl.de
193.16.163.17
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
14 s
sul.rtl.de
193.16.163.16
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
17 s

Outgoing Mails

We have not received any emails from a @rtl.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.rtl.de

Certificate chain
Subject
Common Name (CN)
  • mail.rtl.de
Alternative Names
  • mail.rtl.de
  • assur.rtl.de
  • marduk.rtl.de
  • sul.rtl.de
  • sulis.rtl.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2023-05-02
Not valid after
2024-06-01
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
A9:8D:03:AF:3E:3D:40:41:A9:24:83:F9:B3:7F:E8:1A:D0:18:32:1C:B5:9D:86:7C:E0:F9:D1:27:75:43:7C:74
SHA1
43:6F:41:10:6A:93:54:F9:3D:5C:47:C2:66:12:33:59:16:4D:31:6D
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • 38:5F:9C:FB:2E:F1:5F:99:51:E1:F4:27:BA:C5:E7:3F:A3:C1:95:7E
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : May 2 08:48:06.963 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F1:C2:15:97:B0:F1:CD:44:B4:8A:64:
  • 5B:C9:CD:F2:27:74:9C:DB:05:51:77:D1:3D:99:2F:F4:
  • 4A:3C:E4:D2:C8:02:21:00:AD:78:4D:32:71:8E:2F:C3:
  • 08:FA:0B:59:19:90:56:1A:01:C0:B7:CC:CE:0F:2C:C1:
  • AF:4B:BF:99:43:51:EC:12
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 73:D9:9E:89:1B:4C:96:78:A0:20:7D:47:9D:E6:B2:C6:
  • 1C:D0:51:5E:71:19:2A:8C:6B:80:10:7A:C1:77:72:B5
  • Timestamp : May 2 08:48:06.997 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:22:07:BA:27:29:D1:88:D1:CF:50:7F:F3:
  • CB:22:8F:EC:8A:78:0B:AC:73:63:9F:C6:AA:20:13:6A:
  • 65:8A:4A:E9:02:20:77:7E:4A:A2:F3:95:3E:F6:A8:A2:
  • 1D:97:CD:EE:E6:A4:F0:4B:9F:01:98:C6:E5:97:36:59:
  • C0:8E:1E:A2:6F:A0
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : May 2 08:48:06.934 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C0:12:D0:2B:8A:16:50:76:DF:C4:E1:
  • 9E:57:2C:E8:BF:89:EB:50:CD:32:51:E1:64:A3:BB:E0:
  • 3B:13:0E:5D:4B:02:20:45:EB:BC:A1:1F:3A:3C:50:56:
  • 95:1B:B9:7C:99:57:65:D3:28:CC:96:AF:E6:97:B6:4B:
  • E9:C7:85:65:B5:D3:FB