Title: Multisite Problem
Last modified: August 10, 2025

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# Multisite Problem

 *  Resolved [gb24](https://wordpress.org/support/users/gb24/)
 * (@gb24)
 * [9 months, 4 weeks ago](https://wordpress.org/support/topic/multisite-problem-48/)
 * I’m using FluentSMTP with multisite directory based (example,com/a, example.com/
   b, etc.) rather than subsite based (a.example.com, b.example.com, etc.) and authentication
   with Microsoft 365/Outlook. Did both network activation and also tried individual
   subsite activation.
 * The install, activation, configuraton, and MS365 send mail works fine. However,
   the callback URL generated for each subsite is different, i.e., it contains the
   subsite name. Since the callback URL must be configured in the MS365 app configuration,
   a different MS365 app and secret is now required for each subsite.
 * Could you please add a “real” multisite network configuration option to to apply
   the same global MS365 app id and secret for the main site and all subsites in
   a multisite configuration?
 * Thank you.
 * P.S. I’ve tried the option mentioned in this support request without success:
   [https://wordpress.org/support/topic/great-for-multisite-4/](https://wordpress.org/support/topic/great-for-multisite-4/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [ianhman](https://wordpress.org/support/users/ianhman/)
 * (@ianhman)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/multisite-problem-48/#post-18596882)
 * I am also experiencing exactly the same problem with MS 365 callback URLs for
   multisite.
 * Having a different MS 365 app id/callback URL for each subsite is not practical
   when the same from email is to be used across all subsites.
    -  This reply was modified 9 months, 3 weeks ago by [ianhman](https://wordpress.org/support/users/ianhman/).
 *  Plugin Support [Ibrahim Sharif](https://wordpress.org/support/users/ibrahimsharif/)
 * (@ibrahimsharif)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/multisite-problem-48/#post-18608075)
 * Hello [@gb24](https://wordpress.org/support/users/gb24/),
 * Thank you for reaching out and providing such detailed information about the 
   challenges you’re facing with FluentSMTP and Microsoft 365 in your multisite 
   directory-based WordPress installation.
 * As you correctly pointed out, the current design of FluentSMTP uses the full 
   website URL to generate the callback URL, which necessitates individual Azure
   Apps and tokens for each subsite.
 * I can confirm that I’ve forwarded your feedback as a feature request to our development
   team. We appreciate you bringing this to our attention, as it highlights a significant
   limitation for multisite setups like yours. We will explore options to introduce
   a “real” multisite network configuration option that allows you to use a global
   Microsoft 365 app ID and secret for the main site and all subsites within your
   multisite network.
 * In the meantime, there’s unfortunately no simple workaround within FluentSMTP
   to achieve what you’re looking for. Implementing a custom solution would likely
   involve significant code modifications, which is not something we can directly
   support.
 * We appreciate your patience and understanding as we consider this feature request
   for future development. Thank you for using FluentSMTP!
 *  Thread Starter [gb24](https://wordpress.org/support/users/gb24/)
 * (@gb24)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/multisite-problem-48/#post-18608422)
 * [@ibrahimsharif](https://wordpress.org/support/users/ibrahimsharif/), thank you
   for the response and confirmation of the feature request.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Multisite Problem’ is closed to new replies.

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## Tags

 * [multisite](https://wordpress.org/support/topic-tag/multisite/)
 * [outlook](https://wordpress.org/support/topic-tag/outlook/)

 * 3 replies
 * 3 participants
 * Last reply from: [gb24](https://wordpress.org/support/users/gb24/)
 * Last activity: [9 months, 2 weeks ago](https://wordpress.org/support/topic/multisite-problem-48/#post-18608422)
 * Status: resolved