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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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O365 email local cache (self.selfhosted)

submitted 10 months ago* (last edited 10 months ago) by tastysnacks to c/[email protected]

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Work uses O365 and I'm getting a little frustrated with OWA. Thinking about running a local email server to mirror O365. In the end, I want to keep my email in O365, but have a 2 way sync with a local imap server. Looks like I have a few options on the email server - dovecot/cyrus/stalwart. For the syncing, I just see mbsync. Any experience setting up something similar? Any other options other than what I listed?

Edit: IT knows what I'm doing. I'm not going to compromise any compliance requirements we have.

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[–] [email protected] 9 points 10 months ago

IMAP on O365 now requires "Modern Auth", which requires OAuth to authenticate access to mailboxes. Anything that connects via IMAP will need to be approved by the admins at this point (Including Thunderbird). Without the cooperation of your organization's IT team, you are not going to get far.