Shared mailbox IMAP for automatic processing

Question

Hello,

this is actually no Outlook problem, but I could'nt find a MS 365 Exchange group.

We have been using a shared mailbox in our Exchange 365 for our document management system to receive invoices.

A shared mailbox with address "******@mycompany.com" receives those invoices.

Our DMS looks into that mailbox, retrieves the mail and processes it.

Until a while ago, MS automatically created a user for that mailbox. I assigned a password to that user and the DMS could retrieve the mails with this combination.

I have to admit, that I didn't look after that for quite while. Only now I see my DMS shows an error message "connecting to e-mail account ******@mycompany.com failed: LOGIN failed.".

I've searched a while about how to login for a shared mailbox, now that MS has disabled those 'pseudo-users', but I can't get it to work.

I've read something about "aduser@mycompany\shared_mailbox" as user name with the user's password, but that does not work either.

Using a "normal" IMAP-client like Thunderbird works - I get an OAuth login where I login with some qualified user's credentials, but I can't use that for the DMS.

Answer 1

Hello Diane,

thanks for your reply.

I would have no problem licencing that mail account but I fear that this would not solve my problem.

Also for a regular licenced user account the "simple" login with user name and password for IMAP-Access does not work anymore.

I've tried to attach a different, licenced account to that process. It receives the same error:

Connecting to e-mail account <xyz> failed: LOGIN failed.

Do you (or anyone else) have an idea, how I can disable or work around this 2 factor authorization for automated access?

Answer 2

Hello Lutz,

If you can't log into the account using a qualified user and their password, you will need to license the mailbox. An Exchange Plan 1 mailbox license will be sufficient - these are $4/mo US. I believe that is the least expensive license available at this time.

Diane