SSL-Tools

SSL check results of gravediggers.ch

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Discover if the mail servers for gravediggers.ch 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 Sat, 23 Aug 2025 18:59:14 +0000

The mailservers of gravediggers.ch can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @gravediggers.ch addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.gravediggers.ch
81.221.35.226
 10
supported
smtp.gravediggers.ch
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=smtp.gravediggers.ch

Certificate chain
  • smtp.gravediggers.ch
    • remaining
    • 3072 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • smtp.gravediggers.ch
Alternative Names
  • smtp.gravediggers.ch
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-07-29
Not valid after
2025-10-27
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
72:7A:10:E3:AA:59:B4:82:23:23:7B:41:44:56:30:9A:6E:E7:28:E9:31:C9:AE:4D:B1:3C:99:DE:2D:30:1E:71
SHA1
40:D0:2A:77:C5:24:A8:72:98:2C:AB:65:1E:5E:0D:9E:7A:50:34:2B
X509v3 extensions
subjectKeyIdentifier
  • 59:E4:68:78:2C:09:98:8F:8C:96:D3:11:07:51:01:7E:D5:D7:C7:51
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r11.c.lencr.org/1.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:
  • 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A
  • Timestamp : Jul 29 09:34:29.071 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:B7:12:C0:E8:9F:5A:75:D7:3E:18:8E:
  • 82:84:C5:AA:99:E8:D9:87:78:BF:41:CE:5E:BD:BF:CA:
  • CA:3B:72:E9:93:02:20:44:84:6A:A2:59:C8:84:49:62:
  • 44:C8:25:7C:C3:07:C9:B0:7C:31:F6:33:16:2B:10:18:
  • 57:35:2F:AD:37:ED:EA
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : AF:18:1A:28:D6:8C:A3:E0:A9:8A:4C:9C:67:AB:09:F8:
  • BB:BC:22:BA:AE:BC:B1:38:A3:A1:9D:D3:F9:B6:03:0D
  • Timestamp : Jul 29 09:34:29.206 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:25:F4:88:9C:C2:37:97:0B:0D:2B:D3:EE:
  • 69:60:31:1C:2C:C8:D2:F3:F7:74:6E:A3:B8:13:24:7F:
  • 98:7F:7B:14:02:21:00:9C:0C:53:FF:F9:D3:E3:6A:29:
  • 08:F3:BD:3B:9A:8A:86:FF:36:2B:64:B7:02:CD:8E:10:
  • 19:E8:80:FB:94:AA:E9