Discover if the mail servers for 1stclassmailing.com 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, 24 Oct 2020 14:22:36 +0000
These servers are responsible for incoming mails to @1stclassmailing.com addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
1stclassmailing-com.mail.protection.outlook.com
104.47.36.36
Results incomplete
|
10 |
supported
|
not checked |
|
4 s
|
|
1stclassmailing-com.mail.protection.outlook.com
104.47.38.36
Results incomplete
|
10 |
supported
|
not checked |
|
3 s
|
We have not received any emails from a @1stclassmailing.com address so far. Test mail delivery
No Certificates found