Discover if the mail servers for netfire21.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 Sun, 25 Oct 2020 19:42:51 +0000
These servers are responsible for incoming mails to @netfire21.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
server1.semtex-host.de
2a03:4000:46:57::1
|
10 |
supported
|
server1.semtex-host.de |
|
2 s
|
|
server1.semtex-host.de
45.83.106.136
|
10 |
supported
|
server1.semtex-host.de |
|
2 s
|
We have received emails from these servers with @netfire21.de sender addresses. Test mail delivery
Host | TLS Version & Cipher | |
---|---|---|
server1.semtex-host.de (IPv6:2a03:4000:46:57::1) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|