SSL-Tools

SSL check results of ahlers-online.de

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Discover if the mail servers for ahlers-online.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, 21 Mar 2024 09:23:00 +0000

The mailservers of ahlers-online.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @ahlers-online.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail-gw-01.ahlers-online.de
2a01:4f8:162:70a2:10::100
 10
supported
mail-gw-01.ahlers-online.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
9 s
mail-gw-01.ahlers-online.de
5.9.135.59
 10
supported
mail-gw-01.ahlers-online.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s

Outgoing Mails

We have received emails from these servers with @ahlers-online.de sender addresses. Test mail delivery

Host TLS Version & Cipher
mx.ahlers-online.de (5.9.135.59)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (IPv6:2a01:4f8:162:70a2:10::10)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (138.201.115.40)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (IPv6:2a01:4f8:162:70a2:2::8)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (5.9.120.229)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (IPv6:2a01:4f8:162:70a2:2::4)
TLSv1.3 TLS_AES_256_GCM_SHA384
mx.ahlers-online.de (IPv6:2a01:4f8:162:70a2:2::9)
Insecure - not encrypted!
mail.ahlers-online.de (IPv6:2001:41d0:1:801d::1)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

First seen at:

CN=mail-gw-01.ahlers-online.de

Certificate chain
  • mail-gw-01.ahlers-online.de
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail-gw-01.ahlers-online.de
Alternative Names
  • mail-gw-01.ahlers-online.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-03-20
Not valid after
2024-06-18
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
FD:D8:FE:B7:8B:0D:F0:E2:81:8F:E3:34:D6:B7:E2:62:72:45:87:F6:5C:54:89:47:5D:8D:12:96:FF:0F:C1:58
SHA1
40:E1:58:88:6D:D1:22:22:C6:4F:F2:4B:42:CD:6E:9F:12:D1:70:84
X509v3 extensions
subjectKeyIdentifier
  • 07:61:E6:32:BD:9B:88:26:CE:FC:30:C1:DC:9B:87:7D:1B:00:EE:FB
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
  • 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
  • Timestamp : Mar 21 00:08:21.815 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:53:FC:12:5C:69:EC:77:7B:49:66:BD:16:
  • 47:80:4E:9E:F4:FB:7F:B6:86:44:3B:98:90:65:FC:D9:
  • 33:F5:36:DA:02:20:22:F8:6F:A8:CD:98:1B:60:E0:1F:
  • 47:5F:AF:BE:B7:36:96:8F:FA:CC:0E:3F:5D:7A:48:F5:
  • 93:2D:1E:77:F0:6E
  • 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 21 00:08:21.877 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:65:1A:F0:76:23:E3:5A:50:73:37:83:4F:
  • AE:9E:65:15:EC:46:59:E0:93:F3:DC:2C:B6:F2:72:6D:
  • 9C:80:6F:0B:02:21:00:AA:03:01:AF:BB:16:12:1B:CD:
  • FE:00:AE:4F:57:31:D7:AC:91:6B:96:D4:4E:9B:DA:49:
  • 20:1F:CB:E5:7F:12:1F

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-gw-01.ahlers-online.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid