SSL-Tools

SSL check results of strato.de

NEW You can also bulk check multiple servers.

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

JSON Refresh

Report created Thu, 04 May 2023 10:58:28 +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
12 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
11 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
    • 4096 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
2023-03-28
Not valid after
2024-04-17
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
62:7C:2F:7C:CA:DA:9D:45:3D:99:59:94:F6:FD:0E:3D:78:83:5A:F7:0B:0B:39:52:EB:5A:50:02:55:72:F0:8C
SHA1
63:BA:FF:E1:D9:B7:84:E7:C8:98:36:14:AA:3F:57:60:C3:70:89:F3
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
  • 65:54:1F:9B:09:FE:52:8F:BB:8D:E4:A9:9A:61:C1:77:E2:DC:DE:B7
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • 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 : Mar 28 10:05:41.768 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:53:98:16:74:0B:E9:97:68:16:2A:A0:6E:
  • 46:DE:52:9C:0E:B0:57:C0:F9:80:D3:75:EF:9D:01:E0:
  • D5:4D:8D:20:02:20:0F:A9:59:87:8C:7D:F8:0A:86:51:
  • 58:65:B2:2F:EA:8A:4D:26:CB:A1:F1:51:23:72:5F:45:
  • 5A:B4:12:09:20:09
  • 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 : Mar 28 10:05:41.770 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:F7:C9:6C:58:6A:89:E4:EC:08:EA:2F:
  • 81:88:79:20:0B:FE:7F:6A:E5:50:1A:FC:1D:B4:65:0E:
  • ED:80:D4:CF:E0:02:20:5A:A9:84:14:3F:9F:C9:2A:A0:
  • BC:0A:5E:6F:B3:B1:60:B1:2E:6B:02:D8:C8:1B:0D:F4:
  • A2:47:4B:0A:AE:57:37
  • 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 : Mar 28 10:05:41.699 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:EE:E7:8F:89:5A:D7:88:47:4E:D2:CA:
  • 1C:EF:9D:C0:13:5A:C5:01:2C:67:8F:C9:5C:75:4E:4A:
  • 30:4F:4C:55:1F:02:21:00:AB:BA:59:E9:EB:8A:2D:A8:
  • B4:F5:EB:F1:E7:7D:2B:90:30:B4:7C:A8:D2:22:3B:50:
  • FE:38:53:CF:86:13:C0:75