It’s actually quite simple to determine who an organization uses for their mail and data. All you need to do is review a domains DNS records (using a tool like dnschecker.org) and look at the MX record.
DNS records are public information. The two biggest players in the space are Microsoft and google, the majority of SMBs do not host their own mail servers.
It’s actually quite simple to determine who an organization uses for their mail and data. All you need to do is review a domains DNS records (using a tool like dnschecker.org) and look at the MX record.
For Microsoft/office365, you’ll see some variation of “protection.outlook.com”/“exchange.domain.com”. For google, you’ll see a variation of " MX.google.com".
DNS records are public information. The two biggest players in the space are Microsoft and google, the majority of SMBs do not host their own mail servers.