SSL check results of online.de

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Discover if the mail servers for online.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

Report created Wed, 21 Oct 2020 08:20:48 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mx00.emig.kundenserver.de
212.227.15.40
Results incomplete
10
supported
mx.kundenserver.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx01.emig.kundenserver.de
217.72.192.66
Results incomplete
10
supported
mx.kundenserver.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Host TLS Version & Cipher
mout.kundenserver.de (212.227.17.13)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.130)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.133)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (217.72.192.75)
TLSv1.3 TLS_AES_256_GCM_SHA384
unknown (212.227.126.187)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.17.10)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
mout.kundenserver.de (212.227.126.135)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
mout.kundenserver.de (212.227.126.131)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
mout.kundenserver.de (217.72.192.73)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
mout.kundenserver.de (217.72.192.74)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256

Certificates

First seen at:

CN=mx.kundenserver.de,L=Montabaur,ST=Rheinland-Pfalz,O=1&1 IONOS SE,C=DE

Certificate chain
Subject
Country (C)
  • DE
Organization (O)
  • 1&1 IONOS SE
State (ST)
  • Rheinland-Pfalz
Locality (L)
  • Montabaur
Common Name (CN)
  • mx.kundenserver.de
Alternative Names
  • mx.kundenserver.de
  • mx00.kundenserver.de
  • mx01.kundenserver.de
  • mx00.emig.kundenserver.de
  • mx01.emig.kundenserver.de
  • mx00.ionos.co.uk
  • mx00.ionos.de
  • mx00.ionos.es
  • mx00.ionos.fr
  • mx00.ionos.it
  • mx01.ionos.co.uk
  • mx01.ionos.de
  • mx01.ionos.es
  • mx01.ionos.fr
  • mx01.ionos.it
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
2020-05-28
Not valid after
2022-06-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Client Authentication
  • TLS Web Server Authentication
Fingerprints
SHA256
47:CF:D9:CB:F2:9B:5D:5B:07:E3:48:02:C2:BC:3E:A9:C8:3D:F8:F2:2F:E5:55:15:95:08:BF:E9:18:E0:D7:C9
SHA1
45:8C:72:A7:04:70:7A:EC:CE:30:E2:B3:E9:BF:57:09:08:90:C1:5D
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
  • 80:66:28:24:07:5E:B7:17:25:97:74:D0:18:3E:36:9A:2F:6E:A5:B0
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 : May 28 07:54:38.375 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C1:62:53:B5:6F:2C:04:97:2A:05:30:
  • FA:EF:39:86:2B:15:88:DD:87:4E:29:F1:71:DD:62:C9:
  • 82:4B:6A:24:35:02:20:33:16:11:4F:01:BB:57:82:89:
  • 76:E8:9F:AD:E2:27:31:5F:5C:9B:3D:EA:EF:61:A6:01:
  • B7:2D:86:FB:34:59:1B
  • 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 : May 28 07:54:38.370 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:6F:57:EC:0C:FC:DB:79:C2:47:54:AA:71:
  • 98:2C:FC:8F:A4:16:C6:CC:AA:C3:FE:C7:C1:AD:78:61:
  • D4:F8:22:DD:02:20:49:C6:E1:3E:77:80:29:4C:F2:CD:
  • 5F:75:AE:FA:92:36:61:CA:F6:AA:C1:CF:32:88:08:C4:
  • 1B:8F:DA:D6:5B:2A
  • 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 : May 28 07:54:38.631 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:17:66:35:CF:43:7D:CF:3D:B8:ED:D1:70:
  • 88:25:54:31:71:EB:4E:FE:D2:68:56:D5:FF:43:EF:C0:
  • D0:1E:BA:14:02:21:00:E7:DE:AB:88:3F:95:DE:42:1F:
  • FF:2B:47:D2:ED:73:11:82:7B:BB:F6:AA:9D:FB:2D:F3:
  • 43:C6:A9:08:74:D7:25