SSL check results of blu4.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for blu4.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, 14 May 2022 15:05:05 +0000

No connection to the mailservers of blu4.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @blu4.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx00.kundenserver.de
212.227.15.41
Results incomplete
10
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx01.kundenserver.de
217.72.192.67
Results incomplete
10
supported
not checked
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 @blu4.de sender addresses. Test mail delivery

Host TLS Version & Cipher
mout.kundenserver.de (212.227.126.187)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.134)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.131)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (217.72.192.74)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.17.24)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.135)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.130)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.17.10)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.126.133)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (212.227.17.13)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (217.72.192.73)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout.kundenserver.de (217.72.192.75)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout-xforward.kundenserver.de (82.165.159.37)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

No Certificates found