Discover if the mail servers for online.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 Sat, 13 May 2023 11:20:31 +0000
These servers are responsible for incoming mails to @online.de addresses.
| Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
|---|---|---|---|---|---|---|
|
mx01.emig.kundenserver.de
217.72.192.66
Results incomplete
|
10 |
supported
|
not checked |
|
1 s
|
|
|
mx00.emig.kundenserver.de
212.227.15.40
Results incomplete
|
10 |
supported
|
not checked |
|
1 s
|
We have received emails from these servers with @online.de sender addresses. Test mail delivery
| Host | TLS Version & Cipher | |
|---|---|---|
| mout.kundenserver.de (217.72.192.74) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.17.24) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.126.133) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (217.72.192.73) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.126.135) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.17.13) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.126.130) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (217.72.192.75) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| unknown (212.227.126.187) |
TLSv1.3
TLS_AES_256_GCM_SHA384
|
|
| mout.kundenserver.de (212.227.17.10) |
TLSv1.2
ECDHE-RSA-AES128-GCM-SHA256
|
|
| mout.kundenserver.de (212.227.126.131) |
TLSv1.2
ECDHE-RSA-AES128-GCM-SHA256
|
No Certificates found
Heartbleed