Impact of Microsoft basic authentication deprecation in Exchange Online and support for affected Ricoh products

Ricoh has been made aware of Microsoft’s decision to discontinue support for basic authentication for sending emails using the SMTP protocol in Exchange Online as of September 2025 after March 2026*. Following this change, OAuth2.0 authentication will be required on applications and devices when using the SMTP protocol to send emails.

*On June 11, 2025, Microsoft updated the timeline of the depreciation which was previously September 2025

This notice explains which Ricoh product functions are affected by the deprecation and the planned schedule for OAuth2.0 authentication support.

1. Affected functions

After basic authentication is discontinued, an error will occur when sending emails using the following functions:

• Sending email using the scan function
• Sending internet fax
• Sending fax to an email address
• On-demand Email Notification (function that notifies machine status by email)
• Auto Email Notification (function that sends error notification to a designated administrator email address)
• Sending error notification when using Mail to Print

2. Ricoh’s response to this change

Firmware supporting OAuth2.0 authentication will be made available starting July 2025. Please refer to section 3, “Supported models and OAuth2.0 authentication firmware schedule” for details.

If your device does not support automatic firmware updates or if automatic firmware updates is not enabled, then updates must be applied manually using the RICOH Firmware Update Tool. After the firmware is updated, you will also need to configure the authentication settings from Web Image Monitor. For detailed instructions, please refer to the document “Guide to set up OAuth2.0 authentication for sending Microsoft Exchange Online email” below.

• RICOH Firmware Update Tool: https://www.ricoh.com/support/firmware-update-tool
• Guide to set up OAuth 2.0 authentication for sending Microsoft Exchange Online email

Until firmware for OAuth2.0 authentication is available for your product, we recommend switching to methods that do not rely on email transition or using email services other than Exchange Online.

3. Supported models and OAuth2.0 authentication firmware schedule

Supported Product/Model and availability schedule have been updated. (as of July 24, 2025)

Category	Product/Model	Firmware update availability schedule (using RICOH Firmware Update Tool)
Color MFP	IM C6510/C8010	Mid-September
	IM C6500/C8000	Early September
	IM C7010	Early August
	IM C3010SD/C3510SD/C4510SD/C6010SD	Mid-August
	IM C2010/C2510/C2510J/C3010/C3510/C3519J/C4510/C5510/C6010	Early August
	IM C2000/C2500/C2509J/C3000/C3500/C3509J/C4500/C5500/C6000	Mid-August
	IM C2501CE/C3501CE/C5501CE	Early September
	IM C530F/C530FB	Mid-September
	IM C401F/C401SRF	Early September
	IM C300/C300F/C400F/C400SRF/C400SRFG	Early September
	IM C320F	TBD
	IM CW2200	Late September
	M C2501	Late October
	MP C6503/C8003	Early July
	MP C2004/C2094J/C2504/C2594J/C3004/C3504/C4504/C5504/C6004	Late August
	MP C2004ex/C2094exJ/C2504ex/C3004ex/C3504ex/C4504ex/C5504ex/C6004ex	Late August
	MP C4503/C5503/C6003 without Smart Operation Panel*	Late August
	MP C4503/C5503/C6003 with Smart Operation Panel*	Late August
	MP C3003/C3503 without Smart Operation Panel*	Mid-August
	MP C3003/C3503 with Smart Operation Panel*	Mid-August
	MP C2003/C2003Z/C2503/C2503Z without Smart Operation Panel*	Early September
	MP C2003/C2003Z/C2503/C2503Z with Smart Operation Panel*	Early September
	MP C501	Late October
Monochrome MFP	IM 7000/8000/9000	Early September
	IM 2500/2509J/3000/3009J/3500/3509J/4000/5000/6000	Mid-August
	IM 2702	Early September
	IM 550F/600F/600SRF/600SRFG	Late August
	IM 370/460/460FTL	TBD
	IM 350/IM 430	Mid-August
	MP 6503/7503/9003	Early September
	MP 2555/3055/3555/4055/5055/6055	Mid-August
	MP 2554/3054/3554/4054/5054/6054 without Smart Operation Panel*	Mid-September
	MP 2554/3054/3554/4054/5054/6054 with Smart Operation Panel*	Early October
	MP 2001/2501	Late October
	MP 501/601	Early September
	MP 402SPF	Mid-August
	MP 305+SP/305+SPF	Mid-September
	Aficio MP6002/7502/9002	Early October
	Aficio MP 301	Early October
	MP W7100/8140	Late October
	MP W6700SP	Late October
Color Printer	IP C8500	Mid-September
	P C600	Mid-November
	P C375	Early September
	SP C840DN/C842DN	Mid-November
	SP C360DNw	Mid-November
	SP C340DN/C342DN	Early November
	SP C333DN	Mid-November
Monochrome Printer	SP 8400DN	Late October
	SP 5300/5310	Mid-November
	P 800/801	Early November
	P 501/502	Late October
Production-Cutsheet	Pro C9200/C9210	Early November
	Pro 8400S/8410S/8420S	Early September
	Pro 8410/8420	Late September
	Pro 8300S/8310S/8320S	Mid-September
	Pro 8310/8320	Mid-November
	Pro C7200S/C7210S/C7200SX/C7210SX	Mid-September
	Pro C7200/C7210/C7200X/C7210X	Mid-November
	Pro C5400S/C5410S	Mid-September
	Pro C5400SL	Mid-September
	Pro C5300S/C5310S	Early September
	Pro C5300SL	Early September
	Pro C5200S/C5210S	Early August

4. Important notes

• There are no planned updates for products/models not listed in section 3, ” Supported products and OAuth2.0 authentication firmware schedule.”
• To send email using OAuth2.0 authentication, you must first update to a firmware version that supports OAuth2.0 authentication, then specify necessary settings from Web Image Monitor. 
• To use OAuth2.0 authentication with the updated firmware, you must also specify an administrator email address. This email address will be used as the sender when sending email messages using the scanner function and when sending error notification emails. It will also be used as the "From" address for SMTP authentication when sending email.

5. Related information

• FOR information on how to configure printers and other devices to send email, please refer to the following information from Microsoft. The article also explains ways that you can send email without using SMTP authentication.

Microsoft Tech Community

Fix issues with printers, scanners, and LOB apps that send email using Microsoft 365

https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/fix-issues-with-printers-scanners-and-lob-applications-that-send-email-using-off?context=%2Fexchange%2Fcontext%2Fonline

• For Microsoft’s announcement on ending support for basic authentication for SMTP in Exchange Online, please refer to the link below.

Exchange Online to retire Basic auth for Client Submission (SMTP AUTH)

https://techcommunity.microsoft.com/blog/exchange/exchange-online-to-retire-basic-auth-for-client-submission-smtp-auth/4114750?topicRepliesSort=postTimeDesc

6. Contact

Please contact your local Ricoh representative or dealer if you have any queries.

* Company and product names are trademarks or registered trademarks of their respective companies.

Updated Statement - 24.07.2025

Ricoh has been made aware of Microsoft's decision to discontinue support for basic authentication for sending emails using the SMTP protocol in Exchange Online (also referred to as Office365 or Microsoft 365) which will come into effect after March 2026. This decision follows on from an earlier discontinuation of basic authentication for the POP3S and IMAPS protocol for receiving emails (see Ricoh's statement here).

As part of this transition process, Ricoh will add support for OAuth when using SMTP connections to Office365 for most models that were released after 2017. This overview will be updated as soon as the release dates have been finalised.

Many Ricoh devices already support Automatic Remote Firmware Update (ARFU), so it is very possible that OAuth support for SMTP will be available on your Ricoh device(s) automatically. Additionally, users can also update their Ricoh devices by using the Ricoh Firmware Update Tool (RFUT) which can be found here. 

Customers who are using Ricoh or 3rd party solutions like StreamLine NX should already be able to use OAuth for SMTP.  

Our aim is to support all our customers through this transition and if you have any further questions related to OAuth for SMTP for Office365 please contact your local Ricoh representative who will be able to assist you.

Information from 3rd parties: Microsoft OAuth knowledge article (here) Microsoft knowledge article on different connection methods for SMTP (here) OAuth article on Wikipedia (here).