SSL-Tools

SSL check results of gmx.de

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Discover if the mail servers for gmx.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, 15 Apr 2021 15:46:01 +0000

No connection to the mailservers of gmx.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @gmx.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx01.emig.gmx.net
212.227.17.5
Results incomplete
10
supported
mx.gmx.net
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx00.emig.gmx.net
212.227.15.9
Results incomplete
10
supported
mx.gmx.net
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Host TLS Version & Cipher
mout.gmx.net (212.227.17.20)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.gmx.net (212.227.15.19)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.gmx.net (212.227.15.15)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.gmx.net (212.227.17.21)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.gmx.net (212.227.15.18)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.gmx.net (212.227.17.22)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

First seen at:

CN=mx.gmx.net,L=Montabaur,ST=Rheinland-Pfalz,O=1&1 Mail & Media GmbH,C=DE

Certificate chain
Subject
Country (C)
  • DE
Organization (O)
  • 1&1 Mail & Media GmbH
State (ST)
  • Rheinland-Pfalz
Locality (L)
  • Montabaur
Common Name (CN)
  • mx.gmx.net
Alternative Names
  • mx.gmx.net
  • mx00.gmx.net
  • mx01.gmx.net
  • mx00.emig.gmx.net
  • mx01.emig.gmx.net
  • dhmx01.emig.gmx.net
  • dhmx02.emig.gmx.net
Issuer
Country (C)
  • DE
Organization (O)
  • T-Systems International GmbH
Organizational Unit (OU)
  • T-Systems Trust Center
State (ST)
  • Nordrhein Westfalen
Postal code
  • 57250
Locality (L)
  • Netphen
Street
  • Untere Industriestr. 20
Common Name (CN)
  • TeleSec ServerPass Class 2 CA
validity period
Not valid before
2019-07-08
Not valid after
2021-07-13
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Client Authentication
  • TLS Web Server Authentication
Fingerprints
SHA256
20:0D:00:E1:FF:AE:E6:89:C5:53:9B:7F:CB:B8:D0:C2:BE:7A:90:47:D9:C0:FB:58:5F:B5:87:FA:07:32:AA:15
SHA1
EB:A3:E1:6B:16:5E:61:36:78:DC:0B:A1:12:78:76:FA:65:F1:D4:91
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:C8:74:46:F5:3A:B4:46:48:26:F8:2B:CA:34:1E:56:26:04:12:00
subjectKeyIdentifier
  • FA:0D:A9:12:EE:DC:F8:53:B8:54:EB:7E:6E:00:D3:F7:65:2A:49:AB
certificatePolicies
  • Policy: 1.3.6.1.4.1.7879.13.23.1
  • CPS: http://www.telesec.de/serverpass/cps.html
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.serverpass.telesec.de/rl/ServerPass_Class_2.crl
authorityInfoAccess
  • OCSP - URI:http://ocsp.serverpass.telesec.de/ocspr
  • CA Issuers - URI:http://crl.serverpass.telesec.de/crt/TeleSec_ServerPass_Class_2_CA.cer
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77:
  • 15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13
  • Timestamp : Jul 8 07:03:03.566 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:7D:4A:65:C1:03:32:37:F7:1A:CA:9D:89:
  • 11:79:37:81:A6:25:03:E6:49:D9:F9:10:A8:E4:A9:2D:
  • 8E:60:9B:37:02:20:54:2C:F7:F4:0A:39:60:15:F9:CB:
  • 71:FE:A2:BC:AB:D1:3C:C6:A8:E6:44:0A:73:0F:43:C7:
  • E5:35:9E:CE:52:CC
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 55:81:D4:C2:16:90:36:01:4A:EA:0B:9B:57:3C:53:F0:
  • C0:E4:38:78:70:25:08:17:2F:A3:AA:1D:07:13:D3:0C
  • Timestamp : Jul 8 07:03:03.860 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:76:08:19:34:87:66:3E:84:AF:FF:1E:2A:
  • C7:6C:E2:7F:67:59:B6:1B:93:77:75:D2:39:6D:06:3F:
  • B0:47:6A:DC:02:21:00:83:12:9D:04:6B:CE:6A:68:C6:
  • EE:94:60:43:B0:A9:4D:1E:9A:43:3A:97:93:CD:E6:AD:
  • E5:DD:94:BC:D9:BB:2F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:4B:BD:B7:75:CE:60:BA:E1:42:69:1F:AB:E1:9E:66:
  • A3:0F:7E:5F:B0:72:D8:83:00:C4:7B:89:7A:A8:FD:CB
  • Timestamp : Jul 8 07:03:03.518 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:53:E7:97:F4:27:99:CA:AF:B1:73:50:25:
  • F2:F0:D5:BD:FD:FD:0B:35:43:05:E5:55:01:13:46:C1:
  • 71:A0:77:A2:02:21:00:D2:1A:CC:86:5C:81:AA:54:D9:
  • F2:3A:6E:E6:B2:61:E9:17:33:4D:F8:80:47:D9:08:28:
  • 4D:7E:C6:3A:E3:58:A9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : BB:D9:DF:BC:1F:8A:71:B5:93:94:23:97:AA:92:7B:47:
  • 38:57:95:0A:AB:52:E8:1A:90:96:64:36:8E:1E:D1:85
  • Timestamp : Jul 8 07:03:03.511 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BE:E9:E2:66:43:C3:79:D6:F9:B8:9C:
  • D4:DC:47:86:5E:FB:87:F1:95:06:ED:D9:8D:93:16:85:
  • 56:17:87:AA:75:02:20:77:CC:02:2F:62:D0:93:D6:EA:
  • C0:9F:8C:6F:16:88:3F:2C:41:4A:27:E5:18:C0:CF:F1:
  • 91:5A:18:4B:19:BE:FD
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A4:B9:09:90:B4:18:58:14:87:BB:13:A2:CC:67:70:0A:
  • 3C:35:98:04:F9:1B:DF:B8:E3:77:CD:0E:C8:0D:DC:10
  • Timestamp : Jul 8 07:03:03.515 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:90:85:0F:B5:E1:F4:FB:E8:09:7A:96:
  • 3F:BB:EE:E8:CD:68:5F:16:42:A8:C8:E2:92:FB:4C:2F:
  • 74:DA:1D:08:9F:02:21:00:A3:3D:AA:7E:B2:36:10:91:
  • 08:B5:9A:EC:40:E9:D9:38:B4:E4:5D:73:C8:7B:53:C0:
  • 05:A4:FF:E9:6F:30:FC:36

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.mx01.emig.gmx.net
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.mx00.emig.gmx.net
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid