Discover if the mail servers for dual.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 Thu, 29 Jul 2021 07:51:47 +0000
Please contact the operator of dual.de and ask him or her to solve this problem. This result stays accessible under the following address:
These servers are responsible for incoming mails to @dual.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
mail.dual.de
62.245.201.226
|
10 |
supported
|
mail.dgc-electronics.de |
|
12 s
|
|
mail2.dual.de
62.245.201.227
Results incomplete
|
20 | not checked |
|
11 s
|
We have not received any emails from a @dual.de address so far. Test mail delivery
Certificate is self-signed.