SSL-Tools

SSL check results of muehlberger.net

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Discover if the mail servers for muehlberger.net 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 Tue, 23 Sep 2025 19:22:34 +0000

The mailservers of muehlberger.net can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @muehlberger.net addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp3.muehlberger.net
78.46.205.72
 10
supported
smtp3.muehlberger.net
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
6 s

Outgoing Mails

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

Certificates

First seen at:

CN=smtp3.muehlberger.net

Certificate chain
  • smtp3.muehlberger.net
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E7
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • smtp3.muehlberger.net
Alternative Names
  • autoconfig.muehlberger.net
  • autoconfig.smtp3.muehlberger.net
  • autodiscover.muehlberger.net
  • autodiscover.smtp3.muehlberger.net
  • imap.muehlberger.net
  • mail.muehlberger.net
  • smtp.muehlberger.net
  • smtp3.muehlberger.net
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2025-09-11
Not valid after
2025-12-10
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
B8:CB:AE:BD:89:91:C7:7B:55:B0:4E:7B:96:BB:D9:52:E9:19:F3:FF:69:CC:C6:70:FF:C3:D7:0D:2C:1C:46:7D
SHA1
96:EA:65:B8:21:9D:56:D7:89:8D:B0:92:A7:20:FE:C8:7F:5E:F0:63
X509v3 extensions
subjectKeyIdentifier
  • 8D:2B:8C:35:B4:4E:FB:70:A4:C1:C0:35:6F:FE:47:EF:29:58:9F:8C
authorityKeyIdentifier
  • keyid:AE:48:9E:DC:87:1D:44:A0:6F:DA:A2:E5:60:74:04:78:C2:9C:00:80
authorityInfoAccess
  • CA Issuers - URI:http://e7.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e7.c.lencr.org/89.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : ED:3C:4B:D6:E8:06:C2:A4:A2:00:57:DB:CB:24:E2:38:
  • 01:DF:51:2F:ED:C4:86:C5:70:0F:20:DD:B7:3E:3F:E0
  • Timestamp : Sep 12 00:26:07.306 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:FF:44:87:C8:AB:D9:7D:25:7F:10:5A:
  • 85:13:39:40:45:0B:29:FA:77:8C:FF:3C:9D:67:1F:7A:
  • BB:35:D7:53:A5:02:21:00:AA:A2:E7:EA:4D:D2:84:6C:
  • 40:87:71:FD:E4:C1:22:72:CE:BF:36:6A:25:F0:29:C1:
  • 43:EF:A5:12:69:68:C2:0F
  • 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 : Sep 12 00:26:07.302 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:0F:8E:12:A5:0B:D1:D8:AE:CF:28:88:84:
  • F5:2B:27:4D:B7:22:6A:DA:CF:28:2B:CA:44:4D:52:25:
  • 1A:21:00:25:02:21:00:CD:81:06:79:76:3C:13:50:1A:
  • 66:0C:5A:8D:B9:84:39:5C:60:5E:46:F5:41:1E:DD:E2:
  • 9D:38:A5:4E:19:37:19

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.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.smtp3.muehlberger.net
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—