SSL Report: webmail.semily.cz (188.75.186.251)
Assessed on:  Mon, 16 Jun 2025 08:58:23 UTC | Clear cache
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Summary
Overall Rating
A
0
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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 supports TLS 1.3.  MORE INFO »
HTTP Strict Transport Security (HSTS) with long duration deployed on this server.  MORE INFO »
Certificate #1: RSA 3072 bits (SHA384withRSA)
Server Key and Certificate #1
Subject autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
Common names autodiscover.semily.cz
Alternative names autodiscover.semily.cz server.semily.cz webmail.semily.cz
Serial Number 00b0ae5541bfb5cc97d0967da8a9de17de
Valid from Fri, 13 Jun 2025 00:00:00 UTC
Valid until Sat, 13 Jun 2026 23:59:59 UTC (expires in 11 months and 28 days)
Key RSA 3072 bits (e 65537)
Weak key (Debian) No
Issuer Sectigo Public Server Authentication CA DV R36
AIA: http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt
Signature algorithm SHA384withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information OCSP
OCSP: http://ocsp.sectigo.com
Revocation status Good (not revoked)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 4 (6652 bytes)
Chain issues Contains anchor
#2
Subject Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
Valid until Fri, 21 Mar 2036 23:59:59 UTC (expires in 10 years and 9 months)
Key RSA 3072 bits (e 65537)
Issuer Sectigo Public Server Authentication Root R46
Signature algorithm SHA384withRSA
#3
Subject Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
Valid until Mon, 18 Jan 2038 23:59:59 UTC (expires in 12 years and 7 months)
Key RSA 4096 bits (e 65537)
Issuer USERTrust RSA Certification Authority
Signature algorithm SHA384withRSA
#4
Subject USERTrust RSA Certification Authority   In trust store
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
Valid until Mon, 18 Jan 2038 23:59:59 UTC (expires in 12 years and 7 months)
Key RSA 4096 bits (e 65537)
Issuer USERTrust RSA Certification Authority   Self-signed
Signature algorithm SHA384withRSA


Certification Paths
Path #1: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 In trust store Sectigo Public Server Authentication Root R46   Self-signed
Fingerprint SHA256: 7bb647a62aeeac88bf257aa522d01ffea395e0ab45c73f93f65654ec38f25a06
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Sent by server Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 Sent by server
In trust store 		USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #3: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download Sectigo Public Server Authentication Root R46
Fingerprint SHA256: ce75580bc6796d3b3ea2c3e74259d0d403072408e960c77139c2fb5a3d9419e4
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 In trust store Sectigo Public Server Authentication Root R46   Self-signed
Fingerprint SHA256: 7bb647a62aeeac88bf257aa522d01ffea395e0ab45c73f93f65654ec38f25a06
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Sent by server Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 Sent by server
In trust store 		USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #3: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download Sectigo Public Server Authentication Root R46
Fingerprint SHA256: ce75580bc6796d3b3ea2c3e74259d0d403072408e960c77139c2fb5a3d9419e4
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 In trust store Sectigo Public Server Authentication Root R46   Self-signed
Fingerprint SHA256: 7bb647a62aeeac88bf257aa522d01ffea395e0ab45c73f93f65654ec38f25a06
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Sent by server Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 Sent by server
In trust store 		USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #3: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download Sectigo Public Server Authentication Root R46
Fingerprint SHA256: ce75580bc6796d3b3ea2c3e74259d0d403072408e960c77139c2fb5a3d9419e4
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Sent by server Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 Sent by server
In trust store 		USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Not trusted (path does not chain to a trusted anchor)
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download
  Not in trust store 		Sectigo Public Server Authentication Root R46   Self-signed
Fingerprint SHA256: 7bb647a62aeeac88bf257aa522d01ffea395e0ab45c73f93f65654ec38f25a06
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #3: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download Sectigo Public Server Authentication Root R46
Fingerprint SHA256: ce75580bc6796d3b3ea2c3e74259d0d403072408e960c77139c2fb5a3d9419e4
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 In trust store Sectigo Public Server Authentication Root R46   Self-signed
Fingerprint SHA256: 7bb647a62aeeac88bf257aa522d01ffea395e0ab45c73f93f65654ec38f25a06
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Sent by server Sectigo Public Server Authentication Root R46
Fingerprint SHA256: 92f351bf3d54164dfa8dd8f9e1139d3150349786485d2b9eecd00e2971c1e6c5
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 Sent by server
In trust store 		USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #3: Trusted
1 Sent by server autodiscover.semily.cz
Fingerprint SHA256: 393d534462b1f3f3c16072de7cf7002559e881acc9af574e15f42173ec5b998b
Pin SHA256: M73zQP0B1GUTlu6bYSgTjOWA41Cx9V5MGlDMpyPxC3g=
RSA 3072 bits (e 65537) / SHA384withRSA
2 Sent by server Sectigo Public Server Authentication CA DV R36
Fingerprint SHA256: 8c54c334b66ba4e426772af4a3f9136c19a1aec729fdb28c535c07a5a4ef22e0
Pin SHA256: a9khLOZJxlnJyrxstg/P+seiDCm+Yf3OsrXyFocBaI0=
RSA 3072 bits (e 65537) / SHA384withRSA
3 Extra download Sectigo Public Server Authentication Root R46
Fingerprint SHA256: ce75580bc6796d3b3ea2c3e74259d0d403072408e960c77139c2fb5a3d9419e4
Pin SHA256: Douxi77vs4G+Ib/BogbTFymEYq0QSFXwSgVCaZcI09Q=
RSA 4096 bits (e 65537) / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate

Click here to expand

Configuration
Protocols
TLS 1.3 Yes
TLS 1.2 No
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.3 (suites in server-preferred order)
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128


Handshake Simulation
Android 8.1 Server sent fatal alert: handshake_failure
Android 9.0 Server sent fatal alert: handshake_failure
Chrome 69 / Win 7  R Server sent fatal alert: handshake_failure
Chrome 70 / Win 10 Server sent fatal alert: handshake_failure
Chrome 80 / Win 10  R Server sent fatal alert: handshake_failure
Firefox 62 / Win 7  R Server sent fatal alert: handshake_failure
Firefox 73 / Win 10  R Server sent fatal alert: handshake_failure
Java 11.0.3 Server sent fatal alert: handshake_failure
Java 12.0.1 Server sent fatal alert: handshake_failure
OpenSSL 1.1.0k  R Server sent fatal alert: handshake_failure
OpenSSL 1.1.1c  R Server sent fatal alert: handshake_failure
Safari 12.1.2 / MacOS 10.14.6 Beta  R Server sent fatal alert: handshake_failure
Safari 12.1.1 / iOS 12.3.1  R Server sent fatal alert: handshake_failure
# 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)
Android 4.4.2 Protocol mismatch (not simulated)
Android 5.0.0 Protocol mismatch (not simulated)
Android 6.0 Protocol mismatch (not simulated)
Android 7.0 Protocol mismatch (not simulated)
Android 8.0 Protocol mismatch (not simulated)
Baidu Jan 2015 Protocol mismatch (not simulated)
BingPreview Jan 2015 Protocol mismatch (not simulated)
Chrome 49 / XP SP3 Protocol mismatch (not simulated)
Firefox 31.3.0 ESR / Win 7 Protocol mismatch (not simulated)
Firefox 47 / Win 7  R Protocol mismatch (not simulated)
Firefox 49 / XP SP3 Protocol mismatch (not simulated)
Googlebot Feb 2018 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 11 / Win 7  R Protocol mismatch (not simulated)
IE 11 / Win 8.1  R Protocol mismatch (not simulated)
IE 10 / Win Phone 8.0 Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1  R Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1 Update  R Protocol mismatch (not simulated)
IE 11 / Win 10  R Protocol mismatch (not simulated)
Edge 15 / Win 10  R Protocol mismatch (not simulated)
Edge 16 / Win 10  R Protocol mismatch (not simulated)
Edge 18 / Win 10  R Protocol mismatch (not simulated)
Edge 13 / Win Phone 10  R Protocol mismatch (not simulated)
Java 6u45   No SNI 2 Protocol mismatch (not simulated)
Java 7u25 Protocol mismatch (not simulated)
Java 8u161 Protocol mismatch (not simulated)
OpenSSL 0.9.8y Protocol mismatch (not simulated)
OpenSSL 1.0.1l  R Protocol mismatch (not simulated)
OpenSSL 1.0.2s  R Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6 / iOS 6.0.1 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R Protocol mismatch (not simulated)
Safari 7 / iOS 7.1  R Protocol mismatch (not simulated)
Safari 7 / OS X 10.9  R Protocol mismatch (not simulated)
Safari 8 / iOS 8.4  R Protocol mismatch (not simulated)
Safari 8 / OS X 10.10  R Protocol mismatch (not simulated)
Safari 9 / iOS 9  R Protocol mismatch (not simulated)
Safari 9 / OS X 10.11  R Protocol mismatch (not simulated)
Safari 10 / iOS 10  R Protocol mismatch (not simulated)
Safari 10 / OS X 10.12  R Protocol mismatch (not simulated)
Apple ATS 9 / iOS 9  R Protocol mismatch (not simulated)
Yahoo Slurp Jan 2015 Protocol mismatch (not simulated)
YandexBot Jan 2015 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
ROBOT (vulnerability) No (more info)
Forward Secrecy Yes (with most browsers)   ROBUST (more info)
ALPN No
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) Yes
max-age=31536000; includeSubDomains;
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)
Supported Named Groups x25519, secp256r1, secp384r1, secp521r1, ffdhe2048, ffdhe3072 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
1 https://webmail.semily.cz/  (HTTP/1.1 302 Document Moved)
1
Strict-Transport-Security max-age=31536000; includeSubDomains;
Expires Mon, 16 Jun 2035 12:57:59 GMT
Connection close
Server IceWarp/14.1.0.14 RHEL9 x64
Date Mon, 16 Jun 2025 12:57:59 GMT
Location /webmail/
Content-Type text/html
Content-Length 612
2 https://webmail.semily.cz/webmail/  (HTTP/1.1 200 OK)
2
Connection close
Server IceWarp/14.1.0.14 RHEL9 x64
Date Mon, 16 Jun 2025 12:57:59 GMT
Strict-Transport-Security max-age=31536000; includeSubDomains;
X-UA-Compatible IE=edge
Content-Security-Policy frame-ancestors 'self' *.icewarp.com
Content-type text/html; charset=UTF-8


Miscellaneous
Test date Mon, 16 Jun 2025 08:57:48 UTC
Test duration 34.910 seconds
HTTP status code 200
HTTP server signature IceWarp/14.1.0.14 RHEL9 x64
Server hostname server.semily.cz


SSL Report v2.4.0