Ricoh multifunction printers: OAuth 2.0 and Microsoft 365 SMTP AUTH
Status: Check vendor advisory
The vendor publishes a per-model list and revises it over time, so it is not copied here; a stale second copy of a moving list is exactly how somebody ends up acting on the wrong row. Check your exact model against the vendor’s own page.
What the vendor says
Ricoh publishes affected products with per-product firmware status, revised on 2026-01-30 into two tables - products with released OAuth firmware, and products newly added - plus a third group the Ricoh Firmware Update Tool cannot update, where the local representative has to do it. Not reproduced here because the list is long and still moving; check the model against the advisory. Ricoh does not say any product is permanently excluded, but for devices still waiting its own recommendation is to stop relying on email from the device or to use a mail service other than Exchange Online.
Read the vendor’s statement in full
Everything on this page comes from that document. If it and this page disagree, the vendor is right and this page is out of date — say so.
What to do instead
Once firmware is ruled out, three options remain, and they differ more than they look:
- Direct Send — free, but only delivers to recipients inside your own tenant, and needs a connector plus a static IP.
- A relay that still accepts a username and password — works for any recipient, and is three fields on the device rather than a project.
- Replace the device — sometimes the honest answer. A 2016 MFP with no OAuth path and no security updates is a hardware decision, not a mail one.
The migration guide walks through all of them, including Graph API and paid relays, and the quiz on that page gives a recommendation you can link to.
ZeroSMTP is the second option. It is free with no paid tier, accepts plain SMTP AUTH, and is capped at 200 messages a day — and it sends from a shared @msgwing.com address, not your own domain. If the from-address has to be yours, it is the wrong answer and the migration guide covers the others.
Create a free account · what to put in the device’s SMTP fields · the code examples
Related
- What the error message means — if the Ricoh device is reporting a code rather than a sentence
- The full compatibility list — every vendor, in one table
- Setup by printer brand — where the SMTP fields actually live in each vendor’s interface
Last reviewed 2026-08-16. Source: data/devices.json.
Updated 16 Aug 2026