SSL-Tools

SSL check results of btinternet.com

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Discover if the mail servers for btinternet.com 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, 28 Sep 2023 19:02:24 +0000

The mailservers of btinternet.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @btinternet.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx.lb.btinternet.com
213.120.69.92
 1
supported
btinternet.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

We have received emails from these servers with @btinternet.com sender addresses. Test mail delivery

Host TLS Version & Cipher
mailomta1-sa.btinternet.com (213.120.69.7)
TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

CN=btinternet.com,O=British Telecommunications plc,L=LONDON,C=GB,serialNumber=01800000,businessCategory=Private Organization,jurisdictionC=GB

Certificate chain
Subject
jurisdictionC
  • GB
Business category
  • Private Organization
Serial number
  • 01800000
Country (C)
  • GB
Locality (L)
  • LONDON
Organization (O)
  • British Telecommunications plc
Common Name (CN)
  • btinternet.com
Alternative Names
  • btinternet.com
  • btopenworld.com
  • mx.lb.btinternet.com
  • mx.lb.btopenworld.com
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Common Name (CN)
  • GeoTrust EV RSA CA G2
validity period
Not valid before
2023-07-25
Not valid after
2024-08-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
32:1C:71:53:CE:7C:02:00:7E:7C:6B:3D:23:11:7E:D6:DA:17:C5:E4:65:0C:93:4F:9A:B3:09:0D:CC:3D:41:1E
SHA1
B4:57:42:C5:B9:82:D1:9E:8C:39:A0:BD:38:C7:21:5B:8C:1A:63:EA
X509v3 extensions
authorityKeyIdentifier
  • keyid:28:D2:CF:EE:09:84:75:DD:B5:B2:B5:BF:3C:D5:A0:C6:73:88:5D:1F
subjectKeyIdentifier
  • 07:57:F7:0B:AD:60:9E:FB:8F:A8:9C:9F:AC:03:1B:61:77:35:57:92
crlDistributionPoints
  • Full Name:
  • URI:http://crl3.digicert.com/GeoTrustEVRSACAG2.crl
  • Full Name:
  • URI:http://crl4.digicert.com/GeoTrustEVRSACAG2.crl
certificatePolicies
  • Policy: 2.16.840.1.114412.2.1
  • Policy: 2.23.140.1.1
  • CPS: http://www.digicert.com/CPS
authorityInfoAccess
  • OCSP - URI:http://ocsp.digicert.com
  • CA Issuers - URI:http://cacerts.digicert.com/GeoTrustEVRSACAG2.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Jul 25 14:38:18.278 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:E2:D5:AC:58:74:08:10:69:08:50:CF:
  • E2:11:74:5D:89:16:DE:71:F9:6D:F4:D7:D6:E4:DA:62:
  • 9E:2D:FE:F7:B6:02:20:22:33:93:2C:C6:9D:6D:BC:30:
  • F2:AC:17:5B:B6:04:93:42:ED:AB:0F:8C:B8:85:7B:68:
  • 03:22:0A:47:64:11:A2
  • 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 : Jul 25 14:38:18.334 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:2D:F8:9E:7F:CC:B2:E7:EA:E8:5A:DC:E0:
  • 8E:63:ED:F1:DF:90:FB:F4:9E:9C:F7:46:E7:E7:C2:FB:
  • 71:CB:8F:05:02:21:00:FB:39:C5:74:25:DF:5A:64:9C:
  • F8:35:52:2E:1C:40:50:E0:1C:34:F8:FC:41:B2:12:BD:
  • 68:5A:9F:E0:F2:83:D9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DA:B6:BF:6B:3F:B5:B6:22:9F:9B:C2:BB:5C:6B:E8:70:
  • 91:71:6C:BB:51:84:85:34:BD:A4:3D:30:48:D7:FB:AB
  • Timestamp : Jul 25 14:38:18.281 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:25:E1:FD:BD:17:FA:73:CF:2C:E3:96:41:
  • ED:8B:9E:F4:FB:BD:E8:EC:7D:E5:D5:51:EF:C1:3B:B6:
  • 33:D9:F6:C3:02:21:00:E5:BD:D9:7A:8A:11:34:7A:18:
  • 30:76:03:E8:6B:C3:38:BD:C7:71:29:EF:6F:43:C8:BA:
  • 6C:7D:FF:6E:E6:37:06