SSL-Tools

SSL check results of srv01.creo.host

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Discover if the mail servers for srv01.creo.host 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 Wed, 16 Apr 2025 00:30:25 +0000

The mailservers of srv01.creo.host can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @srv01.creo.host addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
srv01.creo.host
5.9.158.180
 -
supported
srv01.creo.host
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 @srv01.creo.host address so far. Test mail delivery

Certificates

First seen at:

CN=srv01.creo.host

Certificate chain
  • srv01.creo.host
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • srv01.creo.host
Alternative Names
  • srv01.creo.host
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-04-14
Not valid after
2025-07-13
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
6A:0D:13:C9:04:85:06:2E:BA:41:80:20:AA:5C:6C:D8:6B:78:64:62:DC:CC:45:D8:60:9D:DB:B4:7C:79:93:E9
SHA1
5D:48:A5:35:D8:C1:DF:C9:60:D2:4D:EA:14:03:A5:58:A5:18:12:83
X509v3 extensions
subjectKeyIdentifier
  • 0F:76:D9:92:99:23:06:A8:87:DB:FA:C4:85:09:DD:E1:B9:BB:B9:3F
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • OCSP - URI:http://r11.o.lencr.org
  • 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/4.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Apr 14 06:27:29.069 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:7E:B0:80:91:36:5C:3B:19:95:6A:AE:9E:
  • 95:67:64:1D:16:18:97:19:E0:79:10:9A:12:83:15:A5:
  • B0:55:D6:35:02:20:42:AA:5E:E0:22:FE:79:AE:B8:CC:
  • 9D:99:D1:6A:93:CD:CA:34:0C:59:71:56:AD:6D:9D:B5:
  • DD:DD:C4:D1:A5:E9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Apr 14 06:27:29.043 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D0:43:D5:B1:58:FD:3B:4B:5B:7F:B1:
  • 6F:BA:2E:35:CB:0B:50:07:C8:61:03:9A:6D:F7:22:3F:
  • EE:5A:46:B4:A3:02:21:00:CC:72:AC:11:0A:77:09:6C:
  • EA:DA:DD:DA:7A:FA:AF:E1:4A:19:00:CA:A0:63:64:9D:
  • 3B:82:19:21:B4:7A:67:80