DKIM requires the email server to support it. MailEnable Standard does not support it. Since DMARC is based on DkIM, so you cannot have it if your email server does not support DkIM.
You need only one active user (i.e., one user license) to receive and send emails for multiple mailboxes of multiple domains. Add a domain (Microsoft 365 admin center > Settings > Domains). It is straightforward. If your domain is registered with any major registrar (e.g.,…
A small portion of email systems use PTR record as an anti-spam mechanism. It does reverse DNS lookup to find the canonical name of the sending IP address to see if it matches the sender's email address. For example, if an email is sent from…
Breton, the CEO of the large French firm Atos with 74,000 employees is implementing a "zero email" policy. He believes that emails waste time. The former French finance minister has not sent any emails for 3 years since he became the CEO of Atos. Probably…