Discover if the mail servers for th-deg.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, 05 Oct 2023 10:08:24 +0000
These servers are responsible for incoming mails to @th-deg.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
b2821.mx.srv.dfn.de
194.95.235.62
Results incomplete
|
10 |
supported
|
not checked |
|
7 s
|
|
c2821.mx.srv.dfn.de
194.95.239.62
Results incomplete
|
10 |
supported
|
not checked |
|
7 s
|
|
a2821.mx.srv.dfn.de
194.95.233.62
Results incomplete
|
10 |
supported
|
not checked |
|
6 s
|
We have received emails from these servers with @th-deg.de sender addresses. Test mail delivery
Host | TLS Version & Cipher | |
---|---|---|
smtp.th-deg.de (195.37.242.226) |
Insecure - not encrypted!
|
No Certificates found
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.b2821.mx.srv.dfn.de |
|
valid
|
— |
_25._tcp.b2821.mx.srv.dfn.de |
|
valid
|
— |
_25._tcp.c2821.mx.srv.dfn.de |
|
valid
|
— |
_25._tcp.c2821.mx.srv.dfn.de |
|
valid
|
— |
_25._tcp.a2821.mx.srv.dfn.de |
|
valid
|
— |
_25._tcp.a2821.mx.srv.dfn.de |
|
valid
|
— |