SSL-Tools

SSL check results of strato.de

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Discover if the mail servers for strato.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

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Report created Sun, 30 Jun 2024 05:41:16 +0000

The mailservers of strato.de can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
post.in.strato.de
192.166.192.189
 100
supported
*.in.strato.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
post14.in.strato.de
217.74.205.128
 200
supported
*.in.strato.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

We have received emails from these servers with @strato.de sender addresses. Test mail delivery

Host TLS Version & Cipher
mail-ej1-x635.google.com (IPv6:2a00:1450:4864:20::635)
TLSv1.3 TLS_AES_128_GCM_SHA256
mail-ej1-x62f.google.com (IPv6:2a00:1450:4864:20::62f)
TLSv1.3 TLS_AES_128_GCM_SHA256
mail-wr1-x435.google.com (IPv6:2a00:1450:4864:20::435)
TLSv1.3 TLS_AES_128_GCM_SHA256

Certificates

First seen at:

CN=*.in.strato.de,O=Strato AG,L=Berlin,ST=Berlin,C=DE

Certificate chain
  • *.in.strato.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      GeoTrust TLS RSA CA G1
Subject
Country (C)
  • DE
State (ST)
  • Berlin
Locality (L)
  • Berlin
Organization (O)
  • Strato AG
Common Name (CN)
  • *.in.strato.de
Alternative Names
  • *.in.strato.de
  • IN.STRATO.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
2024-04-05
Not valid after
2025-04-17
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
2D:17:36:F2:64:73:43:8A:36:BA:64:1C:2E:FC:B4:7E:15:A1:64:82:21:25:F6:59:1B:5D:E8:39:08:62:3D:E2
SHA1
D1:AE:3E:93:21:50:AE:7E:92:E5:A5:F7:D1:70:0B:94:5A:59:8F:66
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
  • 67:9A:D8:D8:B0:66:95:69:4E:E9:F4:D4:15:59:BB:B3:FF:0E:E9:A2
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
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 : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
  • 1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
  • Timestamp : Apr 5 08:45:27.925 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:64:9C:B6:6E:A4:E5:07:54:F9:D2:7B:F0:
  • F1:80:E2:10:47:6C:B6:D9:2A:9C:50:2A:1C:38:73:0D:
  • FC:08:A1:D2:02:20:43:94:8E:ED:56:C9:AF:1A:20:CE:
  • EE:18:40:F5:78:FF:44:BF:71:68:66:C9:CD:01:39:45:
  • 01:7B:A6:51:34:C0
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
  • 87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
  • Timestamp : Apr 5 08:45:27.787 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:77:13:72:30:AF:74:E3:FF:FA:54:13:5F:
  • DA:E1:B7:67:90:A2:67:A1:27:CD:C6:45:53:E7:5F:39:
  • 63:B0:03:44:02:20:3F:76:2D:AA:0B:5D:B5:6C:38:F4:
  • 13:CA:68:4F:61:F5:EF:89:45:E8:6D:E9:68:0B:D0:E8:
  • 7D:70:C6:F0:4F:B0
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
  • D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
  • Timestamp : Apr 5 08:45:27.804 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:90:0A:9A:F5:52:B8:11:45:2F:C1:D6:
  • 14:9D:F8:73:3F:A3:32:04:D1:64:17:70:BB:32:90:C8:
  • 8A:4A:C7:60:1A:02:20:01:B7:B3:C6:64:81:04:E5:EB:
  • D2:92:4A:5C:50:E5:E9:FB:41:1C:09:70:CD:3E:C8:BA:
  • 97:5D:17:F3:0E:BE:EC