MX Lookup
https://www.nslookup.io/mx-lookup/
To check the MX records for a certain domain name on Windows, follow these steps: Open a command prompt by navigating to Start → 'Type here to search' → 'cmd' → Open. Type nslookup -q=mx example.com and hit [enter] to get the MX records for example.com. Type nslookup -q=mx example.com and hit [enter] to get the MX records for example.com. The MX records are listed below the Non-authoritative answer heading. The MX records are listed below the Non-authoritative answer heading.
Open a command prompt by navigating to Start → 'Type here to search' → 'cmd' → Open.
Type nslookup -q=mx example.com and hit [enter] to get the MX records for example.com. Type nslookup -q=mx example.com and hit [enter] to get the MX records for example.com.
The MX records are listed below the Non-authoritative answer heading. The MX records are listed below the Non-authoritative answer heading.
DA: 57 PA: 75 MOZ Rank: 41