Access Office356 shared mailbox with PHP

Question

I\'m working on a PHP script to read and parse error logs sent to a shared mailbox.

I\'m using imap_open() to connect.

If I connect with the following creden

Answer 1

Try using the account alias

%USERUPN%/%SHAREDALIAS% for example:-

user@domain.com/sharedbox where "sharedbox" is the alias of the shared mailbox instead of the full email address

I've seen different reports of some people using forward slash ( / ) and some using a backslash ( \ )

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Edit

Are you using the mailbox alias? Do not use sharedbox@shareddomain.com

Exchange Configuration:

  USER EMAIL: user@maindomain.com
  PASSWORD: password



 SHARED MAILBOX: shared@anotherdomain.com      (could also be @domain.com, of course)
  SHARED MAILBOX ALIAS: shared-mailbox

Note: Please make sure to create the UNIQUE alias always with the mailbox, because it creates the user [alias]@maindomain.com. In this case shared-mailbox@maindomain.com

Settings for IMAP Configuration:

  EMAIL ADDRESS: shared@anotherdomain.com (shared mailbox)
  IMAP SERVER: outlook.office365.com
  SMTP SERVER: smtp.office365.com
  USERNAME: user@maindomain.com\shared-mailbox  (user\shared mailbox alias)
  PASSWORD: password (user's password)

Answer 2

Another solution that worked for us is to add the username data to the mailbox parameter using the appropriate flags.

For example, with the Office 365 configuration of

USER EMAIL: user@maindomain.com
PASSWORD: password
SHARED MAILBOX: shared@anotherdomain.com

then the imap_open call would be

imap_open("{outlook.office365.com:993/imap/ssl/authuser=user@maindomain.com/user=shared@anotherdomain.com}", "user@maindomain.com", "password");

Note the inclusion of the main user email using the /authuser flag and the shared mailbox using the /user flag.

That worked for us when the mailbox alias approach in the previous answer was not successful.