https://www.solvingmicrosoft365.com/guides/category/exchange-outlook New and reviewed Exchange & Outlook guides. Email, calendars, mail flow, and Outlook clients. en Solving Microsoft 365 Sun, 06 Sep 2026 08:00:00 GMT https://www.solvingmicrosoft365.com/guides/dmarc-rollout https://www.solvingmicrosoft365.com/guides/dmarc-rollout#2026-09-06 Sun, 06 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to roll out DMARC enforcement progressively — the journey from monitoring to enforced anti-spoofing. https://www.solvingmicrosoft365.com/guides/exchange-online-mail-flow-and-connectors https://www.solvingmicrosoft365.com/guides/exchange-online-mail-flow-and-connectors#2026-09-05 Sat, 05 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How mail moves into and out of Exchange Online — connectors, transport rules, and hybrid routing. https://www.solvingmicrosoft365.com/guides/how-to-set-up-dkim-for-a-custom-domain-in-microsoft-365 https://www.solvingmicrosoft365.com/guides/how-to-set-up-dkim-for-a-custom-domain-in-microsoft-365#2026-09-03 Thu, 03 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to set up DKIM signing for a custom domain in Microsoft 365: the two CNAME records, enabling it in Defender, key rotation, and checking headers. https://www.solvingmicrosoft365.com/guides/how-to-put-a-mailbox-on-litigation-hold https://www.solvingmicrosoft365.com/guides/how-to-put-a-mailbox-on-litigation-hold#2026-09-03 Thu, 03 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to put a mailbox on litigation hold in Exchange Online: licence check, enabling the hold with a duration, what it preserves, and releasing it correctly. https://www.solvingmicrosoft365.com/guides/how-to-convert-a-user-mailbox-to-a-shared-mailbox https://www.solvingmicrosoft365.com/guides/how-to-convert-a-user-mailbox-to-a-shared-mailbox#2026-09-03 Thu, 03 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to convert a user mailbox to a shared mailbox in Exchange Online, when it's the right leaver move, the 50 GB and hold rules, and removing the licence. https://www.solvingmicrosoft365.com/guides/shared-mailbox-to-distribution-group-migration https://www.solvingmicrosoft365.com/guides/shared-mailbox-to-distribution-group-migration#2026-09-02 Wed, 02 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to move an address from a shared mailbox to a distribution group, or back, without dropping mail — what happens to history, and when a Group is better. https://www.solvingmicrosoft365.com/guides/exchange-online-add-domain-without-downtime https://www.solvingmicrosoft365.com/guides/exchange-online-add-domain-without-downtime#2026-09-02 Wed, 02 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to add an email domain to Microsoft 365 without downtime: verification, accepted-domain type, SPF, DKIM, DMARC before MX, and the mail-flow traps. https://www.solvingmicrosoft365.com/guides/exchange-hybrid-decommission-last-exchange-server https://www.solvingmicrosoft365.com/guides/exchange-hybrid-decommission-last-exchange-server#2026-09-02 Wed, 02 Sep 2026 08:00:00 GMT Emil Björk Exchange & Outlook What must be true before the last Exchange server can go: recipient management, relay, public folders, management-tools-only, and the removal sequence. https://www.solvingmicrosoft365.com/guides/outlook-new-vs-classic-on-windows https://www.solvingmicrosoft365.com/guides/outlook-new-vs-classic-on-windows#2026-08-31 Mon, 31 Aug 2026 08:00:00 GMT Emil Björk Exchange & Outlook New Outlook vs classic Outlook on Windows: what actually changes, what still doesn't work, and how to run the migration without a user revolt. https://www.solvingmicrosoft365.com/guides/exchange-online-proxy-addresses-and-aliases https://www.solvingmicrosoft365.com/guides/exchange-online-proxy-addresses-and-aliases#2026-08-31 Mon, 31 Aug 2026 08:00:00 GMT Emil Björk Exchange & Outlook How Exchange Online decides which addresses a mailbox answers to: proxy addresses, primary SMTP, UPN vs email, sending from aliases, and hybrid gotchas. https://www.solvingmicrosoft365.com/guides/exchange-hybrid-deployment https://www.solvingmicrosoft365.com/guides/exchange-hybrid-deployment#2026-08-31 Mon, 31 Aug 2026 08:00:00 GMT Emil Björk Exchange & Outlook How hybrid Exchange works — connecting on-prem Exchange Server with Exchange Online, what the wizard actually does, and the path off the last server. https://www.solvingmicrosoft365.com/guides/what-is-exchange-online https://www.solvingmicrosoft365.com/guides/what-is-exchange-online#2026-08-27 Thu, 27 Aug 2026 08:00:00 GMT Emil Björk Exchange & Outlook What Exchange Online is: Microsoft 365's cloud email and calendaring, how it fits the platform, the security and compliance layers, and running it well. https://www.solvingmicrosoft365.com/guides/transport-rule-examples https://www.solvingmicrosoft365.com/guides/transport-rule-examples#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook Real-world transport rule patterns — external-sender warnings, encryption triggers, blocking, and compliance scenarios. https://www.solvingmicrosoft365.com/guides/shared-mailboxes-explained https://www.solvingmicrosoft365.com/guides/shared-mailboxes-explained#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook Shared mailboxes are mailboxes multiple people can monitor. Here's how they differ from groups, distribution lists, and personal mailboxes. https://www.solvingmicrosoft365.com/guides/outlook-signatures-management https://www.solvingmicrosoft365.com/guides/outlook-signatures-management#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to manage email signatures in Outlook — cloud signatures, transport rules, and third-party tools. https://www.solvingmicrosoft365.com/guides/outlook-rules-and-automation https://www.solvingmicrosoft365.com/guides/outlook-rules-and-automation#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook Client-side rules, server-side rules, and Power Automate — the three ways to automate email handling in Microsoft 365. https://www.solvingmicrosoft365.com/guides/outlook-mobile-policies https://www.solvingmicrosoft365.com/guides/outlook-mobile-policies#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How to govern Outlook mobile on iOS and Android — app protection policies, security settings, and feature controls. https://www.solvingmicrosoft365.com/guides/outlook-focused-inbox-and-clutter https://www.solvingmicrosoft365.com/guides/outlook-focused-inbox-and-clutter#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How Focused Inbox separates important mail from the rest, and what happened to its predecessor Clutter. https://www.solvingmicrosoft365.com/guides/outlook-calendar-delegation https://www.solvingmicrosoft365.com/guides/outlook-calendar-delegation#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook The three ways to share a calendar in Outlook — delegate access, share permissions, and shared calendars. https://www.solvingmicrosoft365.com/guides/outlook-cached-mode-and-ost-files https://www.solvingmicrosoft365.com/guides/outlook-cached-mode-and-ost-files#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How classic Outlook caches mailbox data locally — what an OST file is, when to use cached mode, and the modern alternatives. https://www.solvingmicrosoft365.com/guides/office-365-message-encryption https://www.solvingmicrosoft365.com/guides/office-365-message-encryption#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook OME is Microsoft's email encryption service — what it does, how to enable it, and what it looks like for recipients. https://www.solvingmicrosoft365.com/guides/office-365-message-encryption-deep-dive https://www.solvingmicrosoft365.com/guides/office-365-message-encryption-deep-dive#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How OME works under the hood — encryption flow, branding, custom templates, and the recipient experience. https://www.solvingmicrosoft365.com/guides/exchange-online-resource-mailboxes https://www.solvingmicrosoft365.com/guides/exchange-online-resource-mailboxes#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How room and equipment mailboxes work — provisioning, booking, and admin pitfalls. https://www.solvingmicrosoft365.com/guides/exchange-online-archiving-and-litigation-hold https://www.solvingmicrosoft365.com/guides/exchange-online-archiving-and-litigation-hold#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How Exchange Online keeps mail beyond the primary mailbox — archive mailboxes, retention, and legal hold. https://www.solvingmicrosoft365.com/guides/exchange-online-anti-spam-and-anti-phishing https://www.solvingmicrosoft365.com/guides/exchange-online-anti-spam-and-anti-phishing#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook The layered defences Exchange Online uses against spam, malware, and phishing — and how to tune them. https://www.solvingmicrosoft365.com/guides/distribution-lists-vs-microsoft-365-groups https://www.solvingmicrosoft365.com/guides/distribution-lists-vs-microsoft-365-groups#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook How DLs, mail-enabled security groups, and Microsoft 365 Groups differ — and when to use each. https://www.solvingmicrosoft365.com/guides/bimi-and-brand-indicators https://www.solvingmicrosoft365.com/guides/bimi-and-brand-indicators#2026-05-01 Fri, 01 May 2026 08:00:00 GMT Emil Björk Exchange & Outlook BIMI shows your brand logo next to email from your domain in supported clients. Here's the setup and the prerequisites.