[Bug] Messages from shared mailbox being copied into the logged in user.

[shymega]

(Cross-posting to issue tracker).

I'm trying to sync my emails with Davmail and isync, and I'm
encountering a strange issue, where emails from my shared mailboxes,
which my main account has delegated access to, are copied to the logged in account's mailbox. I'm on Exchange 365.

It's very strange.

I have attached the davmail.properties. I'm on the latest release, on
NixOS, but I've tried it in Docker too. I've also attached the relevant
sections (main account and shared mailbox, redacted) of mbsyncrc.

I was just wondering what I should do? Is there a setting I should use?
davmail.properties.txt
mbsyncrc-davmail-sample.txt

[ifrh]

Have you access to OWA and tried "send as shared account".
It could be a setting on the exchange server, in which send folder "send as"-mails are stored.

[shymega]

@ifrh I'm not sure what you mean, but in M365 admin, I have it set to Full Access. This isn't happening upon sending emails, but when doing an initial sync over IMAP.

[ifrh]

IMAP sync moves mails from one inbox to an inbox of an other account?
=> Client filter rules envolved?

or some strange filesystem config:

• symliked or hardlinked boxes