Corporate mail security: the mailbox, spoofing and forwarding
Mail on your own domain is both the door into other services and the storefront from which others can write as you.
Corporate mail is rarely listed as "a system". Meanwhile it resets hosting passwords, it receives leads, and a customer will believe an invoice that looks like it came from you. Protection here is three different jobs: do not give away the mailbox, do not let a foreign mail look like yours, and notice quiet forwarding.
Three layers people mix into one word
- Sign-in: a unique password and a second factor. SMS to a number tied to the same mailbox barely helps.
- Sender spoofing: SPF, DKIM and DMARC. Without them a mail "from the director" can come from someone else's server and look real.
- Quiet mail theft: forwarding rules and delegation. Worth checking after any suspicious sign-in.
DMARC should not be switched to "reject everything" on day one if you have not checked who else legitimately sends as the domain: the site, the CRM, a newsletter. Otherwise you cut off your own invoices. Start in observation mode, then tighten. That is a couple of iterations, not one flag.
Lexora reviews the mail plane together with infrastructure: the sign-in factor, the domain records and who is allowed to create a forward. This is closer to hygiene than to a separate "mail product".
Related Lexora services
Have foreign mails already arrived from the domain?
We will check sign-in, records and forwards without cutting off legitimate sending.