SSL-Tools

SSL check results of gf-werbeagentur.de

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Discover if the mail servers for gf-werbeagentur.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, 30 Oct 2025 01:30:12 +0000

The mailservers of gf-werbeagentur.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @gf-werbeagentur.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
engel.gf-werbeagentur.de
148.251.136.58
 10
supported
engel.gf-werbeagentur.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=engel.gf-werbeagentur.de

Certificate chain
  • engel.gf-werbeagentur.de
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • engel.gf-werbeagentur.de
Alternative Names
  • engel.gf-werbeagentur.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2025-10-28
Not valid after
2026-01-26
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
27:84:5B:A6:B7:04:D1:26:4C:C9:E4:9F:B7:51:78:13:D8:68:CF:98:BA:C6:7F:CA:64:17:4F:BD:DC:5C:D0:90
SHA1
32:2F:13:56:88:8F:E5:CA:14:96:B8:6E:F1:2B:68:59:88:1C:F2:F2
X509v3 extensions
subjectKeyIdentifier
  • 47:67:B4:B0:F4:76:F8:8C:C8:42:3E:FC:56:C1:96:6E:30:98:73:F0
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/123.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : Oct 29 00:40:09.401 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:68:31:EB:00:F0:A3:BD:55:A3:9A:10:79:
  • 92:B1:D2:A0:F7:BD:E2:BE:F3:C8:E0:5A:50:27:BB:E4:
  • EF:65:69:FE:02:21:00:FE:B9:F6:5D:62:AA:3D:6D:EA:
  • E5:B8:70:F9:16:DE:8F:0C:56:66:BA:23:21:DB:BF:DC:
  • FB:1A:90:C6:9C:43:A6
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77:
  • E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6
  • Timestamp : Oct 29 00:40:09.446 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:5A:47:79:EA:37:CC:18:08:D4:16:E0:F1:
  • 82:62:72:09:58:BD:ED:65:00:41:43:98:61:82:46:6B:
  • 5F:AD:28:CA:02:21:00:92:B6:53:01:1A:2A:4E:79:69:
  • 68:EB:4B:73:3B:42:43:44:BF:8A:A8:44:72:0A:8A:F2:
  • 86:99:7A:89:DE:B9:07