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burnleyvic
Regular Pleskian
We have started recently to investigate using shared IMAP folders with Courier IMAP. As far as I know, Plesk is using authpsa authentication module and, before starting to play with configuration options, mailboxes and other in our test environment I was wondering if you've had any experience with this previously, perhaps as a result of other customers' inquiries.
As a starting point, this is where the Courier IMAP shared folders are documented:
http://www.courier-mta.org/imap/README.sharedfolders.html There are basically 3 options one can use to implement this is the virtual environment managed by Plesk, where all the accounts are virtual, owned by user "popuser":
1. Having the users defined in the file /etc/courier-imap/shared/index. This is not an option in a shared environment, where all the listed user & folders are visible to everyone.
2. Defining groups of mail accounts. Better than 1. but still not good enough, since it still allows the IMAP clients to traverse the whole IMAP folder namespace.
3. Using the option "sharedgroup" for the mail accounts. This approach seems to fix the privileges separation issue that 1. and 2. have, *but* it must be supported by the authentication module and the utilities used by Plesk to initialize / update the account options.
Given the above, here comes the questions:
- do you know if Plesk supports the "sharedgroup" option for Courier-IMAP?
- if it does, do you know of any Plesk deployment where this is / has been used?
- if not, what options do we have, or what would you suggest as an alternative?
As a starting point, this is where the Courier IMAP shared folders are documented:
http://www.courier-mta.org/imap/README.sharedfolders.html There are basically 3 options one can use to implement this is the virtual environment managed by Plesk, where all the accounts are virtual, owned by user "popuser":
1. Having the users defined in the file /etc/courier-imap/shared/index. This is not an option in a shared environment, where all the listed user & folders are visible to everyone.
2. Defining groups of mail accounts. Better than 1. but still not good enough, since it still allows the IMAP clients to traverse the whole IMAP folder namespace.
3. Using the option "sharedgroup" for the mail accounts. This approach seems to fix the privileges separation issue that 1. and 2. have, *but* it must be supported by the authentication module and the utilities used by Plesk to initialize / update the account options.
Given the above, here comes the questions:
- do you know if Plesk supports the "sharedgroup" option for Courier-IMAP?
- if it does, do you know of any Plesk deployment where this is / has been used?
- if not, what options do we have, or what would you suggest as an alternative?
