MSP Change Deskhttps://mspchangedesk.com/Microsoft 365 change action packs for MSPsAction Pack #001: SMTP AUTH Basic Auth goes off by default at the end of December 2026https://mspchangedesk.com/packs/001-smtp-auth-basic-auth/https://mspchangedesk.com/packs/001-smtp-auth-basic-auth/Mon, 19 Oct 2026 12:00:00 +0000Microsoft will disable Basic authentication for SMTP AUTH by default in existing Exchange Online tenants at the end of December 2026. Scan-to-email copiers and older line-of-business apps are the usual casualties. Find them now, while there's time to fix them before the holidays.