Mail flow, done right
Mail flow, transport rules, email authentication, archiving and the migrations every Exchange administrator eventually faces.
16 field guides
From user report to root cause: Message Trace V2, the Extended report, audit mode, rule identity, and safe Exchange Online mail flow testing.
26 August 2026 · 42 min read
Retire your last hybrid Exchange server in 2026: the eligibility test, Management Tools with no server, SMTP relay migration, and the SE CU2 deadline.
11 July 2026 · 20 min read
Migrate EWS scripts to Microsoft Graph (2026): three Graph surfaces, OAuth + permissions, EWS to Graph cookbook, side-by-side PowerShell examples and runbook.
23 June 2026 · 24 min read
The 20-check Exchange Online mail flow audit for 2026: SPF / DKIM / DMARC, connectors, mail flow rules, anti-spam, SMTP AUTH and the rollback evidence pack.
12 June 2026 · 24 min read
2026 playbook to find every EWS integration before the October retirement: discovery methods, Allow List, Microsoft Graph migration, checklist.
9 June 2026 · 15 min read
2026 Exchange Online playbook: HVE general availability, SMTP AUTH retirement timeline, DMARC enforcement, connectors and Defender baseline.
5 June 2026 · 17 min read
Interactive Exchange Online mail flow decision builder for Microsoft 365. Covers transport rules, connectors, SMTP AUTH with OAuth, High Volume Email, Graph sendMail, Azure Communication Services Email, Defender for Office 365, DLP, external forwarding, spoofing, naming conventions, and rollout guidance for 2026.
6 May 2026 · 35 min read
Real-world Exchange Online transport rule patterns for disclaimers, external tagging, encryption, attachment blocking, SCL overrides, condition logic, and a 14-point audit checklist.
24 April 2026 · 17 min read
How to configure SPF, DKIM, DMARC, MTA-STS and TLS-RPT for Exchange Online in 2026 — the order of operations and how to reach DMARC p=reject without breaking mail.
15 April 2026 · 13 min read
Learn how to migrate away from SMTP AUTH Basic Authentication in Exchange Online. Find Basic Auth senders, compare OAuth, SMTP Relay, HVE and Graph API, and disable Basic Auth safely before Microsoft’s cutoff.
31 March 2026 · 14 min read
Learn how to configure Exchange Online High Volume Email (HVE) for internal notifications, including account setup, authentication, Conditional Access exclusions, testing, and common troubleshooting steps.
29 March 2026 · 13 min read
Exchange Web Services (EWS) retirement is approaching. Understand the outage risks and learn a practical migration strategy to Microsoft Graph.
16 February 2026 · 5 min read
Learn how to configure, customize, and analyze Exchange Online mailbox auditing using PowerShell and Purview. Includes best practices, KQL queries, and troubleshooting.
1 December 2025 · 8 min read
Learn how to create, configure, and manage shared mailboxes in Exchange Online. A clear step-by-step guide covering permissions, PowerShell, and best practices.
27 November 2025 · 5 min read
Learn how to configure Mail Flow Rules in Exchange Online with a detailed step-by-step guide for IT administrators. Improve email security, apply disclaimers, block risky attachments, and strengthen compliance across Microsoft 365. Clear examples, best practices, and troubleshooting included.
14 November 2025 · 13 min read
Learn how Microsoft’s new Auto-Archiving feature in Exchange Online automatically moves old emails when mailboxes near capacity. Prevent interruptions, save admin time, and ensure continuous productivity with intelligent, automated archiving.
7 November 2025 · 2 min read