The steps described in this article apply to all of the scenarios above, unless otherwise noted. all your mailboxes are on-premises, and you use Exchange Online Protection (EOP) to protect your email.all your mailboxes are hosted in Office 365, but you have a multifunction printer, scanner, or fax machine that needs to send emails.you have mailboxes on your on-premises server as well as in Office 365 you want to use a 3rd-party solution for spam filtering you want to route your outbound email messages through Office 365 to protect your on-premises servers' IP addresses from being blacklisted.you have mailboxes on your on-premises server as well as in Office 365 you want to use filtering and compliance solutions in the on-premises environment for all email messages all email messages, both inbound and outbound, must route through your on-premises servers.you keep your own mailboxes on your own organization's server, aka on-premises server you want to use Office 365's spam filtering service, and send emails from your on-premise server via Office 365.you host all your mailboxes in Office 365, while using a 3rd-party cloud solution for filtering spam and malware, archiving and auditing.you host all your mailboxes in Office 365 and use all spam and malware filtering solutions offered by Office 365.The following mail flow scenarios are supported in Office 365:
Office 365 offers great flexibility in handling how emails are delivered to your organization's mailboxes. The path an email message takes from the internet to a mailbox and vice versa is called mail flow in Office 365 Exchange Server. uses on-premises Microsoft Exchange Server, cloud-based Office 365 or a hybrid environment.Īnd wants to set up DMARC, DKIM and SPF to stop email spoofing and email phishing for your customers and employees, this guide is for you.uses Office 365 initial domain or your own custom domain to send emails.sends outbound emails from Office 365 (Exchange Online).Millions of companies use Office 365 everyday to send business emails. Office 365 has become the de facto standard for productivity software. It's critically important for any company using Office 365 Exchange Server for email to implement DMARC, DKIM, and SPF to prevent or stop email spoofing and phishing as well as improve email deliverability.
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