SSL-Tools

SSL check results of jaba.cz

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Discover if the mail servers for jaba.cz 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, 25 Nov 2021 01:39:56 +0000

The mailservers of jaba.cz can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

These servers are responsible for incoming mails to @jaba.cz addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
tlsa1.jaba.cz
87.236.194.107
 1
supported
tlsa1.jaba.cz
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
tlsa2.jaba.cz
89.187.140.193
 2
supported
tlsa2.jaba.cz
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
62 s
mail.jaba.cz
87.236.194.103
 10
supported
mail.jaba.cz
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
mail2.jaba.cz
89.187.140.195
 20
supported
WMSvc-SHA2-EXCH2016A
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
72 s

Outgoing Mails

We have not received any emails from a @jaba.cz address so far. Test mail delivery

Certificates

First seen at:

CN=tlsa2.jaba.cz,OU=mail,O=Baraconsult,L=Praha,ST=Praha,C=CZ

Certificate chain
  • tlsa2.jaba.cz
    • remaining
    • 1024 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      JABA-CA
Subject
Country (C)
  • CZ
State (ST)
  • Praha
Locality (L)
  • Praha
Organization (O)
  • Baraconsult
Organizational Unit (OU)
  • mail
Common Name (CN)
  • tlsa2.jaba.cz
Issuer
Domain Component (DC)
  • local
  • jaba
Common Name (CN)
  • JABA-CA
validity period
Not valid before
2021-11-24
Not valid after
2023-11-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
84:89:BC:59:00:EA:01:42:4A:76:42:5F:60:71:E1:21:94:40:6C:6A:E1:C6:19:02:8F:C6:07:F9:FB:CE:07:44
SHA1
D9:6B:6F:5B:8D:20:4F:9E:7E:8E:7A:AF:B4:CA:D2:21:36:D3:4E:D8
X509v3 extensions
SMIME-CAPS
  • 0i0...*.H.. ......0...*.H.. ......0...`.H.e...*0...`.H.e...-0...`.H.e....0...`.H.e....0...+....0
  • ..*.H.. ..
subjectKeyIdentifier
  • 66:8C:1E:00:7F:AB:29:81:F6:EA:AB:AC:88:A1:5C:0B:14:FB:B5:DF
authorityKeyIdentifier
  • keyid:AA:A2:22:59:06:C1:C8:E5:34:47:9F:AD:CD:9D:10:97:9E:9C:86:BD
crlDistributionPoints
  • Full Name:
  • URI:ldap:///CN=JABA-CA,CN=Exch2016C,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=jaba,DC=local?certificateRevocationList?base?objectClass=cRLDistributionPoint
authorityInfoAccess
  • CA Issuers - URI:ldap:///CN=JABA-CA,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=jaba,DC=local?cACertificate?base?objectClass=certificationAuthority
1_3_6_1_4_1_311_20_2
  • ...W.e.b.S.e.r.v.e.r
First seen at:

CN=WMSvc-SHA2-EXCH2016A

Certificate chain
  • WMSvc-SHA2-EXCH2016A (Certificate is self-signed.)
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
Subject
Common Name (CN)
  • WMSvc-SHA2-EXCH2016A
Issuer

Certificate is self-signed.

validity period
Not valid before
2021-03-05
Not valid after
2031-03-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • Data Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
0E:FC:D8:9E:8D:1D:2A:6D:98:A9:A8:35:AC:B6:E6:13:8F:EB:0F:92:D2:88:40:34:3D:22:0B:5C:06:8D:31:D1
SHA1
2C:B3:1D:0E:5B:16:76:9C:61:0C:B9:A3:2A:DB:AC:8A:74:3A:2C:0B
First seen at:

CN=tlsa1.jaba.cz,OU=mail,O=Baraconsult,L=Praha,ST=Praha,C=CZ

Certificate chain
  • tlsa1.jaba.cz
    • remaining
    • 1024 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      JABA-CA
Subject
Country (C)
  • CZ
State (ST)
  • Praha
Locality (L)
  • Praha
Organization (O)
  • Baraconsult
Organizational Unit (OU)
  • mail
Common Name (CN)
  • tlsa1.jaba.cz
Issuer
Domain Component (DC)
  • local
  • jaba
Common Name (CN)
  • JABA-CA
validity period
Not valid before
2021-11-24
Not valid after
2023-11-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
E0:CA:CA:E9:92:D3:5E:44:FF:D1:F1:42:22:8A:15:26:5E:61:F9:33:48:A0:89:52:53:CA:CA:78:80:FE:DF:64
SHA1
4E:B0:6E:0B:4C:A1:A6:37:DA:B3:80:C6:59:58:D4:95:66:77:DA:CF
X509v3 extensions
SMIME-CAPS
  • 0i0...*.H.. ......0...*.H.. ......0...`.H.e...*0...`.H.e...-0...`.H.e....0...`.H.e....0...+....0
  • ..*.H.. ..
subjectKeyIdentifier
  • B8:A6:F6:6D:8A:32:4A:09:93:41:73:F3:68:31:96:ED:77:FF:A6:63
authorityKeyIdentifier
  • keyid:AA:A2:22:59:06:C1:C8:E5:34:47:9F:AD:CD:9D:10:97:9E:9C:86:BD
crlDistributionPoints
  • Full Name:
  • URI:ldap:///CN=JABA-CA,CN=Exch2016C,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=jaba,DC=local?certificateRevocationList?base?objectClass=cRLDistributionPoint
authorityInfoAccess
  • CA Issuers - URI:ldap:///CN=JABA-CA,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=jaba,DC=local?cACertificate?base?objectClass=certificationAuthority
1_3_6_1_4_1_311_20_2
  • ...W.e.b.S.e.r.v.e.r
First seen at:

CN=mail.jaba.cz,O=Baraconsult,C=cz

Certificate chain
  • mail.jaba.cz (Certificate is self-signed.)
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Unknown Authority
Subject
Country (C)
  • cz
Organization (O)
  • Baraconsult
Common Name (CN)
  • mail.jaba.cz
Issuer

Certificate is self-signed.

validity period
Not valid before
2019-04-14
Not valid after
2029-04-11
Fingerprints
SHA256
99:27:37:6D:C9:57:D6:7F:B2:BA:5A:00:F7:5E:A1:D4:9F:88:A9:48:93:B3:84:78:29:A7:38:44:A6:ED:1C:6D
SHA1
61:66:3A:9A:BC:78:F8:84:27:31:BB:85:81:71:BC:6B:27:05:6F:81
X509v3 extensions
subjectKeyIdentifier
  • 36:8B:D3:22:8A:A5:D5:AC:32:DD:D3:36:37:21:EA:72:17:92:61:68
authorityKeyIdentifier
  • keyid:36:8B:D3:22:8A:A5:D5:AC:32:DD:D3:36:37:21:EA:72:17:92:61:68

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.tlsa2.jaba.cz
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.tlsa2.jaba.cz
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.tlsa1.jaba.cz
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.tlsa1.jaba.cz
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid