SSL Report: mobile.email.bt.com (65.20.50.93)
Assessed on:  Sat, 22 Nov 2025 00:17:47 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary
Overall Rating
B
0
20
40
60
80
100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
This server does not support Forward Secrecy with the reference browsers. Grade capped to B.  MORE INFO »
This server does not support TLS 1.3.  MORE INFO »
This site works only in browsers with SNI support.
Certificate #1: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=
Common names mobile.email.bt.com
Alternative names mobile.email.bt.com
Serial Number 07b9bbc06974db1876cad2b1f8f872af
Valid from Wed, 22 Jan 2025 00:00:00 UTC
Valid until Wed, 21 Jan 2026 23:59:59 UTC (expires in 1 month and 30 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer GeoTrust EV RSA CA G2
AIA: http://cacerts.digicert.com/GeoTrustEVRSACAG2.crt
Signature algorithm SHA256withRSA
Extended Validation Yes
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://crl3.digicert.com/GeoTrustEVRSACAG2.crl
OCSP: http://ocsp.digicert.com
Revocation status Good (not revoked)
CRL ERROR: IOException occurred
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (3118 bytes)
Chain issues None
#2
Subject GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=
Valid until Tue, 02 Jul 2030 12:42:57 UTC (expires in 4 years and 7 months)
Key RSA 2048 bits (e 65537)
Issuer DigiCert Global Root G2
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server mobile.email.bt.com
Fingerprint SHA256: a460cb1aa976ee5407b7a03bd537a0c09fc4df0101bdce55f7e3a3f4526aa502
Pin SHA256: b9EvNSEP+PDJBQm4XTUQd+PdHn1pS4eqa4EBFy6E+kQ=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=
Common names email.bt.com
Alternative names email.bt.com autoconfig.btinternet.com autoconfig.btopenworld.com autoconfig.talk21.com autodiscover.btinternet.com autodiscover.btopenworld.com autodiscover.talk21.com btmail.bt.com cal.btinternet.com caldav.btinternet.com calendar.btinternet.com card.btinternet.com carddav.btinternet.com contacts.btinternet.com ux.btmail.bt.com   MISMATCH
Serial Number 0cd99dfa1b4b9a5a4068354eb4723cdb
Valid from Wed, 22 Jan 2025 00:00:00 UTC
Valid until Wed, 21 Jan 2026 23:59:59 UTC (expires in 1 month and 30 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer GeoTrust EV RSA CA G2
AIA: http://cacerts.digicert.com/GeoTrustEVRSACAG2.crt
Signature algorithm SHA256withRSA
Extended Validation Yes
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://crl3.digicert.com/GeoTrustEVRSACAG2.crl
OCSP: http://ocsp.digicert.com
Revocation status Good (not revoked)
CRL ERROR: IOException occurred
Trusted No   NOT TRUSTED
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (3445 bytes)
Chain issues None
#2
Subject GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=
Valid until Tue, 02 Jul 2030 12:42:57 UTC (expires in 4 years and 7 months)
Key RSA 2048 bits (e 65537)
Issuer DigiCert Global Root G2
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d])
1 Sent by server email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d])
1 Sent by server email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d])
1 Sent by server email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d])
1 Sent by server email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d])
1 Sent by server email.bt.com
Fingerprint SHA256: e8cd41d8f18a6fb131554af9d4cc0fb90699f0df55d0341e19a573041264506d
Pin SHA256: 77YBgF3Qyk1kfPpEunlF+7y/YP0GOPju53F2/okVriM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server GeoTrust EV RSA CA G2
Fingerprint SHA256: 2d140f20b8a96e2b4d2f1cc5aca5e5a1e7dc56a7491e510906960f38d2d21aef
Pin SHA256: VHUagq80gsWdvnfHL/+2XSLZrAJk4I9d8fx6N8UvWGM=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=

RSA 2048 bits (e 65537) / SHA256withRSA

Click here to expand

Click here to expand

Configuration
Protocols
TLS 1.3 No
TLS 1.2 Yes*
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No
(*) Experimental: Server negotiated using No-SNI


Cipher Suites
# TLS 1.2 (suites in server-preferred order)
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)   WEAK 128
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK 256
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)   WEAK 256
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)   WEAK 128
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)   ECDH x25519 (eq. 3072 bits RSA)   FS 256P
(P) This server prefers ChaCha20 suites with clients that don't have AES-NI (e.g., Android devices)


Handshake Simulation
Android 4.4.2 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Android 5.0.0 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Android 6.0 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Android 7.0 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Android 8.0 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Android 8.1 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Android 9.0 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
BingPreview Jan 2015 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Chrome 49 / XP SP3 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Chrome 69 / Win 7  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Chrome 70 / Win 10 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Chrome 80 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Firefox 31.3.0 ESR / Win 7 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Firefox 47 / Win 7  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Firefox 49 / XP SP3 RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Firefox 62 / Win 7  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Firefox 73 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Googlebot Feb 2018 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
IE 11 / Win 7  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
IE 11 / Win 8.1  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
IE 11 / Win Phone 8.1  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
IE 11 / Win Phone 8.1 Update  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
IE 11 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Edge 15 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Edge 16 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Edge 18 / Win 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Edge 13 / Win Phone 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Java 8u161 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Java 11.0.3 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Java 12.0.1 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
OpenSSL 1.0.1l  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
OpenSSL 1.0.2s  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
OpenSSL 1.1.0k  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
OpenSSL 1.1.1c  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 6 / iOS 6.0.1 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 7 / iOS 7.1  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 7 / OS X 10.9  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 8 / iOS 8.4  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 8 / OS X 10.10  R RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 9 / iOS 9  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 9 / OS X 10.11  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 10 / iOS 10  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 10 / OS X 10.12  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_RSA_WITH_AES_128_CBC_SHA  No FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Apple ATS 9 / iOS 9  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
YandexBot Jan 2015 RSA 2048 (SHA256)   TLS 1.2 TLS_RSA_WITH_AES_128_CBC_SHA  No FS
# Not simulated clients (Protocol mismatch)
Android 2.3.7   No SNI 2 Protocol mismatch (not simulated)
Android 4.0.4 Protocol mismatch (not simulated)
Android 4.1.1 Protocol mismatch (not simulated)
Android 4.2.2 Protocol mismatch (not simulated)
Android 4.3 Protocol mismatch (not simulated)
Baidu Jan 2015 Protocol mismatch (not simulated)
IE 6 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 7 / Vista Protocol mismatch (not simulated)
IE 8 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 8-10 / Win 7  R Protocol mismatch (not simulated)
IE 10 / Win Phone 8.0 Protocol mismatch (not simulated)
Java 6u45   No SNI 2 Protocol mismatch (not simulated)
Java 7u25 Protocol mismatch (not simulated)
OpenSSL 0.9.8y Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R Protocol mismatch (not simulated)

Click here to expand

(1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.
(2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.
(3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.
(R) Denotes a reference browser or client, with which we expect better effective security.
(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).
(All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.


Protocol Details
Secure Renegotiation Supported
Secure Client-Initiated Renegotiation No
Insecure Client-Initiated Renegotiation No
BEAST attack Mitigated server-side (more info)  
POODLE (SSLv3) No, SSL 3 not supported (more info)
POODLE (TLS) No (more info)
Zombie POODLE No (more info)   TLS 1.2 : 0x002f
GOLDENDOODLE No (more info)   TLS 1.2 : 0x002f
OpenSSL 0-Length No (more info)   TLS 1.2 : 0x002f
Sleeping POODLE No (more info)   TLS 1.2 : 0x002f
Downgrade attack prevention Unknown (requires support for at least two protocols, excl. SSL2)
SSL/TLS compression No
RC4 No
Heartbeat (extension) No
Heartbleed (vulnerability) No (more info)
Ticketbleed (vulnerability) No (more info)
OpenSSL CCS vuln. (CVE-2014-0224) No (more info)
OpenSSL Padding Oracle vuln.
(CVE-2016-2107)
No (more info)
ROBOT (vulnerability) No (more info)
Forward Secrecy With some browsers (more info)
ALPN Yes   http/1.1
NPN No
Session resumption (caching) Yes
Session resumption (tickets) Yes
OCSP stapling No
Strict Transport Security (HSTS) No
HSTS Preloading Not in: Chrome  Edge  Firefox  IE 
Public Key Pinning (HPKP) No (more info)
Public Key Pinning Report-Only No
Public Key Pinning (Static) No (more info)
Long handshake intolerance No
TLS extension intolerance No
TLS version intolerance No
Incorrect SNI alerts No
Uses common DH primes No, DHE suites not supported
DH public server param (Ys) reuse No, DHE suites not supported
ECDH public server param reuse No
Supported Named Groups x25519, secp256r1, x448, secp521r1, secp384r1 (server preferred order)
SSL 2 handshake compatibility Yes


HTTP Requests
1 https://mobile.email.bt.com/  (HTTP/1.1 403 Forbidden)
1
content-length 93
cache-control no-cache
content-type text/html
connection close


Miscellaneous
Test date Sat, 22 Nov 2025 00:16:01 UTC
Test duration 106.11 seconds
HTTP status code 403
HTTP server signature -
Server hostname btprdhap001.bt.prod.cloud.openwave.ai


SSL Report v2.4.1