Discover if the mail servers for www.offermann-koeln.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 Wed, 27 May 2020 09:35:23 +0000
Please contact the operator of www.offermann-koeln.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 @www.offermann-koeln.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
www.offermann-koeln.de
5.252.226.157
|
- |
supported
|
mail.offermann-koeln.de |
|
2 s
|
|
www.offermann-koeln.de
2a03:4000:40:da:42c:3cff:fe71:ac45
Results incomplete
|
- | not checked |
|
1 s
|
We have not received any emails from a @www.offermann-koeln.de address so far. Test mail delivery