365 mailbox address must match FreeScout mailbox address

[IanSimpson]

PHP version: 8.1
FreeScout version: 1.8.194
Database: MySQL
Are you using CloudFlare: No
Are you using non-official modules: No

In my 365 I've set up a mailbox as freescout@domain.com. Within this I've got several folders (e.g. "Accounts", "Enquiries", ...). I've then got distribution lists for accounts@domain.com and enquiries@domain.com which push into this freescout@domain.com inbox, and using message rules I can push received emails into the appropriate place. Net result is I can tidily sort all incoming email inside one account.

Over in FreeScout I've set up 365 OAuth/IMAP per the instructions, fetching from the relevant subfolder, and this works - except it seems I have to have all my mailboxes set up as freescout@domain.com. If I change my accounts mailbox email address to "accounts@domain.com" then it breaks the fetch process ("Error: connection setup failed: Authentication failed;"). If I leave it as freescout@domain.com then it's confusing, and all replies by default come from that address.

The "fetch from" field on the connection settings is a mirror of the "email address" field on the "edit mailbox" screen - I think I need these to be two separate values.

[IanSimpson]

Ultimately I believe this in Mail.php is where the problem stems from - the email address for that mailbox is accounts@domain.com in my case, the username for the IMAP connection is freescout@domain.com. The system is essentially trying to use a single configuration value to represent two different things (which are often the same):

We can't use $mailbox->in_username as that's storing our Azure App ID. Perhaps we could add a new configuration field $mailbox->in_oauth_username or similar which is only displayed when we're using OAuth?

Note this will presumably need fixed in both the IMAP and SMTP parts of the system, I'm using a different SMTP so not sure.

[freescout-help]

#5006 (comment)

[IanSimpson]

Understood.

A fix doesn't have to be complex - I've tested this change in a fork and it works well - basically lets me create an OAUTH_IMAP_USERNAME variable in my .env, and if present, it uses that instead of the mailbox name. I'd be happy to clean that up a little and create a PR if you wanted?

[freescout-help]

Can you use "Aliases" field to store the "accounts@domain.com" email for each mailbox?

[freescout-help]

A fix doesn't have to be complex - I've tested this change in a fork and it works well - basically lets me create an OAUTH_IMAP_USERNAME variable in my .env, and if present, it uses that instead of the mailbox name.

It's very strange that you are able to connect via OAuth using email as "username" instead of Azure App ID. It should not work this way. You are testing it on MailHelper::getHeader() function, which does not connect if needed data is present in DB. So most likely your code is never executed.