SSL-Tools

SSL check results of sigma-chemnitz.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for sigma-chemnitz.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

JSON Refresh

Report created Thu, 06 Apr 2023 10:00:32 +0000

No connection to the mailservers of sigma-chemnitz.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @sigma-chemnitz.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx1.cvg.de
193.158.56.146
Results incomplete
10 not checked
DANE
errors
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mail-mta-3.sigma-chemnitz.de
2003:49:a034:1067:d::3
Results incomplete
20
supported
mail-mta-3.intern.sigma-chemnitz.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
mail-mta-3.sigma-chemnitz.de
193.158.56.148
Results incomplete
20
supported
mail-mta-3.intern.sigma-chemnitz.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
mail-mta-2.sigma-chemnitz.de
2003:49:a034:1067:d::2
Results incomplete
20
supported
mail-mta-2.intern.sigma-chemnitz.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mx1.sigma-chemnitz.de
62.153.82.29
Results incomplete
30 not checked
DANE
errors
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

We have received emails from these servers with @sigma-chemnitz.de sender addresses. Test mail delivery

Host TLS Version & Cipher
smtpout-3.cvg.de (IPv6:2003:49:a034:1067:5::3)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

First seen at:

emailAddress=techadmin@sigma-chemnitz.de,CN=mail-mta-3.intern.sigma-chemnitz.de,O=SIGMA Chemnitz GmbH,L=Chemnitz,ST=Saxony,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Saxony
Locality (L)
  • Chemnitz
Organization (O)
  • SIGMA Chemnitz GmbH
Common Name (CN)
  • mail-mta-3.intern.sigma-chemnitz.de
Email
  • techadmin@sigma-chemnitz.de
Alternative Names
  • mail-mta-3.intern.sigma-chemnitz.de
  • mail-mta-3.sigma-chemnitz.de
  • mail-mta.intern.sigma-chemnitz.de
  • mail.cvg.de
  • mail.sigma-chemnitz.de
Issuer
Country (C)
  • DE
State (ST)
  • Saxony
Locality (L)
  • Chemnitz
Organization (O)
  • SIGMA Chemnitz GmbH
Common Name (CN)
  • SIGMA Chemnitz Server CA 2021
validity period
Not valid before
2021-11-17
Not valid after
2024-01-23
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • Key Agreement
  • TLS Web Server Authentication
Fingerprints
SHA256
FC:9E:BD:DE:FA:2A:2E:98:DD:E3:04:B1:6A:BB:D9:D6:CC:25:0A:72:28:06:4A:00:44:33:A0:CE:33:3B:7F:08
SHA1
55:09:43:8C:8B:10:9F:B7:0B:E3:77:82:91:A5:F3:46:15:BB:09:EA
X509v3 extensions
subjectKeyIdentifier
  • 93:7A:03:96:5A:AE:7F:C2:40:E9:8B:F5:80:11:3F:9F:18:0A:07:E7
nsCertType
  • SSL Server
authorityKeyIdentifier
  • keyid:8E:C1:33:56:4D:51:23:D5:91:BC:AF:0D:DC:5B:AE:59:7C:AB:44:22
authorityInfoAccess
  • CA Issuers - URI:http://ca.sigma-chemnitz.de/crt/SIGMA-CA-server_2021.p7c
crlDistributionPoints
  • Full Name:
  • URI:http://ca.sigma-chemnitz.de/crl/server-ca_2021.crl
First seen at:

emailAddress=techadmin@sigma-chemnitz.de,CN=mail-mta-2.intern.sigma-chemnitz.de,O=SIGMA Chemnitz GmbH,L=Chemnitz,ST=Saxony,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Saxony
Locality (L)
  • Chemnitz
Organization (O)
  • SIGMA Chemnitz GmbH
Common Name (CN)
  • mail-mta-2.intern.sigma-chemnitz.de
Email
  • techadmin@sigma-chemnitz.de
Alternative Names
  • mail-mta-2.intern.sigma-chemnitz.de
  • mail-mta-2.sigma-chemnitz.de
  • mail-mta.intern.sigma-chemnitz.de
  • mail.cvg.de
  • mail.sigma-chemnitz.de
Issuer
Country (C)
  • DE
State (ST)
  • Saxony
Locality (L)
  • Chemnitz
Organization (O)
  • SIGMA Chemnitz GmbH
Common Name (CN)
  • SIGMA Chemnitz Server CA 2021
validity period
Not valid before
2021-11-17
Not valid after
2024-01-23
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • Key Agreement
  • TLS Web Server Authentication
Fingerprints
SHA256
BA:78:1D:84:E2:CC:E3:E7:27:69:8B:F7:5E:02:03:F4:D6:35:7D:EB:CA:BC:E2:3F:81:BA:46:75:7F:43:19:89
SHA1
D0:51:37:D3:58:B6:C4:81:A4:AB:4C:96:F7:74:7B:FC:6B:CF:1E:0A
X509v3 extensions
subjectKeyIdentifier
  • 7B:D7:E5:7E:3A:6C:51:E6:39:46:9C:9D:BF:39:1E:D1:CF:9B:50:B8
nsCertType
  • SSL Server
authorityKeyIdentifier
  • keyid:8E:C1:33:56:4D:51:23:D5:91:BC:AF:0D:DC:5B:AE:59:7C:AB:44:22
authorityInfoAccess
  • CA Issuers - URI:http://ca.sigma-chemnitz.de/crt/SIGMA-CA-server_2021.p7c
crlDistributionPoints
  • Full Name:
  • URI:http://ca.sigma-chemnitz.de/crl/server-ca_2021.crl

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.mail-mta-3.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mail-mta-3.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
valid
_25._tcp.mx1.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mx1.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mx1.cvg.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mx1.cvg.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mail-mta-2.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mail-mta-2.sigma-chemnitz.de
  • DANE-TA: Trust Anchor Assertion
  • Use full certificate
  • SHA-256 Hash
valid
valid