SSL-Tools

SSL check results of 5x2.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for 5x2.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

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Report created Tue, 06 May 2025 04:53:53 +0000

No connection to the mailservers of 5x2.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @5x2.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx-srv03.5x2.de
136.243.126.148
Results incomplete
5
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx-srv01.5x2.de
136.243.126.146
Results incomplete
10
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx-srv02.5x2.de
136.243.126.147
Results incomplete
20
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

We have received emails from these servers with @5x2.de sender addresses. Test mail delivery

Host TLS Version & Cipher
bu.mout75.5x2.de (188.40.173.75)
TLSv1.2 ADH-AES256-GCM-SHA384
bu.mout73.5x2.de (188.40.173.73)
TLSv1.2 ADH-AES256-GCM-SHA384
bu.mout71.5x2.de (188.40.173.71)
TLSv1.2 ADH-AES256-GCM-SHA384
bu.mout78.5x2.de (188.40.173.78)
TLSv1.2 ADH-AES256-GCM-SHA384
bu.mout68.5x2.de (188.40.173.68)
TLSv1.2 ADH-AES256-GCM-SHA384
mout154.5x2.de (136.243.126.154)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout150.5x2.de (136.243.126.150)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout139.5x2.de (136.243.126.139)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout138.5x2.de (136.243.126.138)
TLSv1.3 TLS_AES_256_GCM_SHA384
mout151.5x2.de (136.243.126.151)
TLSv1.3 TLS_AES_256_GCM_SHA384
mailout.5x2.de (94.130.189.67)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

No Certificates found

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.mx-srv03.5x2.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.mx-srv01.5x2.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.mx-srv02.5x2.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—