SSL-Tools

SSL check results of nerdboxmail.com

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Discover if the mail servers for nerdboxmail.com 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 Mon, 05 May 2025 00:31:47 +0000

The mailservers of nerdboxmail.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @nerdboxmail.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.nerdboxmail.com
2a01:4f8:c013:e6f9::1
 10
supported
mail.nerdboxmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s
mail.nerdboxmail.com
138.199.235.36
 10
supported
mail.nerdboxmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
4 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.nerdboxmail.com

Certificate chain
  • mail.nerdboxmail.com
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.nerdboxmail.com
Alternative Names
  • autoconfig.nerdboxmail.com
  • autodiscover.nerdboxmail.com
  • mail.nerdboxmail.com
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-04-30
Not valid after
2025-07-29
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
5A:27:AF:B1:4D:B4:55:10:77:8E:85:8A:F9:29:F2:53:C8:70:D8:F9:F3:37:42:8B:37:88:B5:19:37:8B:6B:F3
SHA1
58:AC:76:CD:10:F1:7E:7E:34:0F:25:BF:2C:C3:BB:F7:D9:2F:8F:D6
X509v3 extensions
subjectKeyIdentifier
  • FF:72:D0:B0:8D:ED:2F:83:B2:DB:94:83:13:78:2B:C3:08:55:D1:63
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • OCSP - URI:http://r10.o.lencr.org
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/66.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Apr 30 07:27:35.584 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:9E:BB:87:FB:98:E3:1C:AF:24:2F:E3:
  • 03:38:74:30:22:4F:F5:2A:FF:DA:43:25:B6:A0:FA:E2:
  • E5:DD:7C:F6:56:02:21:00:93:DC:D2:B4:39:00:D0:C9:
  • 60:7C:0B:DD:9F:B9:3F:D6:4A:86:31:5D:39:B9:94:2E:
  • 2E:70:46:F7:B9:9B:F7:7A
  • 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 : Apr 30 07:27:35.943 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:3E:22:DD:DE:F3:B3:D2:D2:DB:31:D3:CC:
  • 65:6F:45:62:B9:E7:15:6C:14:44:B6:9D:63:2B:3A:FD:
  • 29:DA:62:16:02:21:00:AF:E3:F7:69:1D:26:96:92:96:
  • 73:A6:26:BB:6F:2D:21:50:B1:D3:D4:3C:82:F7:CF:AD:
  • 64:65:AB:26:0B:AF:18

DANE

DNS-based Authentication of Named Entities (DANE) is a protocol to allow X.509 certificates to be bound to DNS using TLSA records and DNSSEC.

Name Options DNSSEC Matches
_25._tcp.mail.nerdboxmail.com
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid