INFO: Exchange Online to retire Basic auth for Client Submission (SMTP AUTH)
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ZTN4620
This Zetadocs technical note applies to:
Summary
Microsoft have announced that Exchange Online will permanently remove support for Basic authentication in September 2025. More information on this announcement can be found here.
This announcement means that Zetadocs Delivery systems will no longer be able to use Basic authentication with Exchange Online when sending emails, as of September 2025. It is therefore essential that Zetadocs Delivery customers make the configuration changes required before this date, to avoid disrupting the sending of documents.
More information
With this change, we have several options available, depending on your installation method of Zetadocs Delivery.
Zetadocs Delivery & Zetadocs Capture Extension for Business Central
If you are running with this installation method (both online and on-premises versions of the Extension), you will have the following solutions available.
- Migrate your delivery settings to Microsoft 365. This is the prefered option and one we would recommend using. The installation guide here will assist you in setting this up. Please note, if you are moving from SMTP, you will be moving from an individual mailbox sending to user sending. You will need to configure rules to change the from address and then ensure permissions are in place for users sending to have access to this mailbox for sending.
- Migrate to Azure Communication Services. We have all the information regarding this located on the technote ZTN4616.
- Any other cloud-based secure SMTP service which allows for Basic authentication may be used with Zetadocs Delivery if that is the preferred option.
Zetadocs Delivery & Zetadocs Capture for NAV
With this installation method, you will have the following solutions available.
- Migrate to Azure Communication Services. We have all the information regarding this located on the technote ZTN4616.
- Any other SMTP service which allows for Basic authentication may be used with Zetadocs Delivery if that is the preferred option.
References
Microsoft blog: Exchange Online to retire Basic auth for Client Submission (SMTP AUTH) | Microsoft Community Hub
Equisys Technote ZTN4616: HOWTO: Configure Exchange Online SMTP Delivery with Azure Communication Services
Installation guide for Delivery Settings: Zetadocs System Settings Help > Zetadocs Delivery Settings
Last updated: 11th April 2025 (BB/NT)
Keywords: Zetadocs Delivery, SMTP, Microsoft Exchange Online, Azure Communication Services, Azure Email Communication Services, App Password retirement