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SSL check results of r-b-bau-profi.de

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Discover if the mail servers for r-b-bau-profi.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

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Report created Sun, 01 Jun 2025 06:20:22 +0000

The mailservers of r-b-bau-profi.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @r-b-bau-profi.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.r-b-bau-profi.de
2a01:4f9:4a:5581::2
 10
supported
mail.r-b-bau-profi.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mail.r-b-bau-profi.de
95.217.198.143
 10
supported
mail.r-b-bau-profi.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @r-b-bau-profi.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.r-b-bau-profi.de

Certificate chain
  • mail.r-b-bau-profi.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.r-b-bau-profi.de
Alternative Names
  • mail.r-b-bau-profi.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-05-31
Not valid after
2025-08-29
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
D9:49:18:7E:57:5D:4F:58:91:CD:7E:53:03:59:66:7A:92:50:F6:F9:1D:4B:38:0F:AF:E7:F8:51:A7:03:B5:EF
SHA1
78:99:55:7F:DD:66:D3:79:84:D2:10:34:97:2A:EA:0F:27:AA:E6:A4
X509v3 extensions
subjectKeyIdentifier
  • E9:F2:F1:94:97:2A:E1:20:4B:A4:2D:56:D4:03:A7:C3:10:4E:EE:F6
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • 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/12.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 : May 31 22:49:48.904 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CF:F0:D8:AF:01:B5:53:DA:51:24:BD:
  • 62:60:9F:D8:C8:DA:E8:2B:9E:3A:34:02:30:A5:CB:47:
  • DE:ED:0B:96:1B:02:20:4F:CC:1B:61:40:F7:2C:11:A2:
  • D7:4A:C4:8F:CF:0E:40:59:C3:30:06:48:D4:DD:CA:16:
  • 49:55:3E:6A:56:EA:88
  • 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 : May 31 22:49:48.881 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:23:68:67:3B:9E:41:4C:69:E6:4D:B5:B9:
  • 18:B5:B5:5F:11:A4:E4:A9:AB:5C:DA:1B:11:04:FB:A7:
  • 3C:9A:A5:55:02:20:77:32:8D:F2:C9:55:25:A0:F8:59:
  • F8:F4:3A:B5:84:50:68:70:7B:5E:D0:EA:67:31:32:0D:
  • E7:B2:06:0A:B1:E1