Office365 Shared Mailbox

[devinhyden]

This is not an issue. I would have added it to the Wiki, but that is not setup. I do not know where else to place this information. Please let me know if there is a better place.

Connecting to Office365 works out of the box. Connecting to a shared mailbox required additional configuration. It took me sometime to figure out and wanted to share.

How to connect to an Office365 shared mailbox

• Create the sharedbox in Office365 with an alias

• Grant permission to the user account performing the IMAP with read and manage to the shared mailbox

• Create a new profile (or however you configured your IMAP configuration)
  IMAP_HOST=outlook.office365.com
  IMAP_PORT=993
  IMAP_ENCRYPTION=SSL
  IMAP_VALIDATE_CERT=TRUE
  IMAP_USERNAME = (SMTPADDRESS of user account)/(mailboxname)
  IMAP_PASSWORD = (SMTPADDRESS of user account's password)

• config options['open'] add 'DISABLE_AUTHENTICATOR' => 'PLAIN'

Example
User Account
SMTP - test@test.com
PASS - test1234

SharedMailbox
SMTP - reports@test.com
Alias - reports-mailbox@test.com

IMAP_USERNAME = test@test.com/reports
IMAP_PASSWORD = test1234

For the username, I've noticed using the alias does not work and have not tested connecting to a shared mailbox without an alias.

'options' => [
        'delimiter' => '/',
        'fetch' => FT_UID,
        'open' => [
            // 'DISABLE_AUTHENTICATOR' => 'GSSAPI'
            'DISABLE_AUTHENTICATOR' => 'PLAIN'
        ]
    ]

Answer taken from https://stackoverflow.com/questions/28481028/access-office356-shared-mailbox-with-php