Discover if the mail servers for labcontrol.cz 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 Fri, 16 Oct 2020 10:27:29 +0000
Please contact the operator of labcontrol.cz 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 @labcontrol.cz addresses.
| Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
|---|---|---|---|---|---|---|
| mail.labcontrol.cz 90.176.152.243 | 1 | 
supported
 | mail.labcontrol.cz | 
 | 38 s | |
| relay.zoner.com 2a00:19a0:3:78::d9c6:7817:1 | 5 | 
supported
 | *.zoner.com | 
 | 2 s | |
| relay.zoner.com 217.198.120.23 | 5 | 
supported
 | *.zoner.com | 
 | 2 s | |
| 10mx.zoner.com 217.198.120.36 | 10 | 
supported
 | *.zoner.com | 
 | 3 s | |
| 15mx.zoner.com 81.0.233.6 
Results incomplete
 | 15 | 
unsupported
 | not checked |  | 11 s | 
We have not received any emails from a @labcontrol.cz address so far. Test mail delivery