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 Wed, 22 Jul 2026 05:39:24 +0000

No connection to the mailservers of muehlberger.net could be established.

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
Results incomplete
10
supported
smtp3.muehlberger.net
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
backup-mx.muehlberger.net
159.48.39.194
Results incomplete
50
supported
smtp3.muehlberger.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 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
      • YE1
        • remaining
        • 384 bit
        • ecdsa-with-SHA384
          • Root YE
            • remaining
            • 384 bit
            • ecdsa-with-SHA384
              • ISRG Root X2 (Certificate is self-signed.)
                • remaining
                • 384 bit
                • ecdsa-with-SHA384
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)
  • YE1
validity period
Not valid before
2026-07-13
Not valid after
2026-10-11
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
0F:AE:E5:52:DD:F8:DF:AE:C4:FE:A6:61:09:ED:CC:BC:C1:25:14:49:AB:58:FF:01:22:D1:6A:77:FD:BE:DD:12
SHA1
48:DE:D4:CE:54:D5:4E:58:6E:1B:B9:28:2E:E9:68:4E:E4:27:FB:E1
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:BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityInfoAccess
  • CA Issuers - URI:http://ye1.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye1.c.lencr.org/1.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D:
  • E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A
  • Timestamp : Jul 14 00:26:04.887 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:19:25:79:29:52:0A:8B:34:03:37:89:D5:
  • 6E:AE:59:2C:5B:4E:7B:E4:6B:6E:FF:4D:64:26:DD:33:
  • D8:83:99:8F:02:20:1A:3C:C0:7F:81:43:CD:1B:69:76:
  • C1:2D:0A:06:6F:06:3C:EB:A0:AC:2B:43:12:15:C1:0F:
  • 59:A1:FE:5F:33:55
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19:
  • D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27
  • Timestamp : Jul 14 00:26:05.287 2026 GMT
  • Extensions: 00:00:05:00:13:F4:AB:D1
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CB:75:33:08:37:C5:3F:49:63:F1:31:
  • 97:B5:79:A3:22:69:B5:EB:E7:DF:53:D9:B9:FF:31:62:
  • 30:0C:48:CC:E2:02:20:66:8A:6F:35:57:2C:88:56:BC:
  • 5A:A0:00:E5:75:B8:59:E4:4B:C1:75:60:EA:8D:F7:FC:
  • 47:F4:4D:65:E0:EF:29

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
—
_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
—