I did try the mailbox permissions but it did not work! Even with the deny delete permission users are still able to delete their emails

And can you maybe tell me where exactly does the exchange server save the deleted mails??

there are also products like the North Seas box that will archive all incoming and outgoing emails to a backup system before they even arrive at someone’s mailbox. that way you already have a copy before the recipient does. You can archive the emails for years as long as you have enough storage space.

you can find it here: http://www.northseasamt.com/

With Outlook and Exchange you have the ability to have deleted item retained on the server and can restore them from outlook if needed. While they might delete the e-mail you can retrieve it without having to restore if even available.

In system manager right click on the mailbox store and go to properties… You can then go to the limits tab and adjust your deletion settings parameters.

Then in outlook go to your mailbox and choose tools/ recover deleted items. This should then allow you to recover these messages.

The only other way is to create another information store and copy all received mail to that new store or use a third party product based on typical archiving or compliance rules.

I have the exact opposite problem! My users won’t delete their e-mails. Seriously, since this is likely a concern about someone being malicious. The best bet is to set the retention time on the information store to a level where you you feel comfortable the item will not be removed before you might need to restore it.

Additionally, outlook has a feature that allows you to undelete (assuming retention is on) when outlook is connected to an Exchange server.

Well thanks for the help!

Have a nice day