SSL check results of securesmtp.t-online.de

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Discover if the mail servers for securesmtp.t-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 Sat, 07 Apr 2018 15:59:49 +0000

The mailservers of securesmtp.t-online.de 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 @securesmtp.t-online.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
sfwdallmx.t-online.de
194.25.134.110
10
supported
securesmtp.t-online.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11.0 s
sfwdallmx.t-online.de
194.25.134.46
10
supported
securesmtp.t-online.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11.0 s

Outgoing Mails

We have not received any emails from a @securesmtp.t-online.de address so far. Test mail delivery

Certificates

First seen at:

securesmtp.t-online.de

Certificate chain
Subject
Country (C)
  • DE
Organization (O)
  • Deutsche Telekom AG
Organizational Unit (OU)
  • NSO-DS
State (ST)
  • Hessen
Locality (L)
  • Darmstadt
Common Name (CN)
  • securesmtp.t-online.de
Alternative Names
  • securesmtp.t-online.de
  • smtpmail.t-online.de
  • smtp-mail.t-online.de
  • secure-smtp.t-online.de
  • umsgate.t-online.de
  • asmtp.t-online.de
  • secureasmtp.t-online.de
  • smtp.t-online.de
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
2018-03-01
Not valid after
2020-03-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Client Authentication
  • TLS Web Server Authentication
Fingerprints
SHA256
CA:BA:C4:9E:48:75:AB:DF:27:54:DB:8E:81:2F:A0:13:EA:67:95:BD:8B:5B:D1:45:F7:72:B5:28:7D:4E:D4:2F
SHA1
EA:DF:46:A5:01:B2:C2:CB:BD:4B:86:FA:17:06:30:09:67:01:BE:FC
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
  • 7A:1D:D7:8A:A1:5E:D0:19:38:BA:6F:C9:FC:CC:56:BC:F0:BD:E2:75
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
  • Full Name:
  • URI:ldap://ldap.serverpass.telesec.de/CN=TeleSec%20ServerPass%20Class%202%20CA,OU=T-Systems%20Trust%20Center,O=T-Systems%20International%20GmbH,C=DE?CertificateRevocationList
authorityInfoAccess
  • OCSP - URI:http://ocsp.serverpass.telesec.de/ocspr
  • CA Issuers - URI:http://crl.serverpass.telesec.de/crt/TeleSec_ServerPass_Class_2_CA.cer
  • CA Issuers - URI:ldap://ldap.serverpass.telesec.de/CN=TeleSec%20ServerPass%20Class%202%20CA,OU=T-Systems%20Trust%20Center,O=T-Systems%20International%20GmbH,C=DE?cACertificate