Microsoft 365 Business Basic vs Standard vs Premium (2026)
Microsoft 365 Business Basic, Standard and Premium compared for admins: prices checked 7 October 2026, Entra ID, Intune, Defender, the 300-user cap and when E3/E5 fit.
October 7, 2026
Conditional Access Baseline Policies for Microsoft 365 (2026)
A 2026 Conditional Access baseline for Microsoft 365: seven policies, break-glass exclusions, report-only rollout, licensing, and Graph PowerShell export and import.
October 7, 2026
SMTP Bounce Explainer: What Your Bounce Message Means
Paste a bounce or SMTP error and get the meaning of its status codes, the likely cause and the fix, including Gmail, Microsoft and Spamhaus messages.
October 6, 2026
SPF Lookup Counter: Check the 10 DNS Lookup Limit
Count every DNS lookup in a domain's SPF record against the RFC 7208 limit of 10, find void lookups, duplicates and dead terms, and get a trimmed or minimally flattened record.
October 6, 2026
Find a DKIM Selector: Headers, Panel Defaults and Key Checks
Find a domain's DKIM selector from the DKIM-Signature header, the cPanel, DirectAdmin, Microsoft 365 and Google defaults, and check that the published key is valid.
October 6, 2026
Outlook 550 5.7.515: Fix the High-Volume Sender Rejection
Fix Outlook.com 550 5.7.515 "sending domain does not meet the required authentication level": the 5,000-a-day rule, SPF, DKIM, DMARC and alignment checks.
October 6, 2026
Emails Going to Junk in Outlook and Hotmail: Sender-Side Fix
Why your mail lands in Outlook.com or Hotmail junk and how to fix it from the sending side: authentication, IP checks, SNDS reputation, JMRP complaints and content.
October 6, 2026
Exchange Online Message Trace PowerShell: Get-MessageTraceV2
Exchange Online message trace with PowerShell: Get-MessageTraceV2 and Get-MessageTraceDetailV2 examples, limits, CSV export beyond 5,000 rows, and historical search.
October 6, 2026
Exchange Online Message Trace to CSV: Get-MessageTraceV2 Script
Free PowerShell script for Exchange Online message trace with Get-MessageTraceV2: 10-day slicing, 5,000-row continuation, throttle handling and CSV export.
October 6, 2026
Exchange Online Mailbox Permissions Report: FullAccess, SendAs
Free PowerShell script that exports FullAccess, SendAs and SendOnBehalf permissions for all Exchange Online mailboxes to CSV, using the EXO V3 cmdlets.
October 6, 2026
Microsoft 365 MFA Status Report: PowerShell Script for Graph
Free PowerShell script that reports MFA registration, MFA capable, default method, admin flag, licence and last sign-in for every Microsoft 365 user via Microsoft Graph.
October 6, 2026
Entra ID Inactive Users Report: signInActivity PowerShell Script
Free PowerShell script that lists inactive Microsoft Entra ID users from signInActivity, with guests, licensed-only and never-signed-in filters and CSV output.
October 6, 2026