Discover if the mail servers for koelner-hug.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.
Report created Fri, 24 Jul 2020 09:55:59 +0000
However, we found problems that may affect the security.
These servers are responsible for incoming mails to @koelner-hug.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
remote.koelner-hug.de
87.79.68.66
|
10 |
supported
|
SMTP-Server |
|
5 s
|
|
mail2.koelner-hug.de
80.147.164.91
|
10 |
supported
|
SMTP-Server |
|
5 s
|
|
relay.rzone.de
81.169.145.96
Results incomplete
|
200 |
supported
|
relay.rzone.de |
|
1 s
|
We have not received any emails from a @koelner-hug.de address so far. Test mail delivery
Certificate is self-signed.