When I set up email redirects within Plesk 9.5, Spamassassin ignores all emails sent to the redirected address and only scans emails that are sent directly to the address which has a mailbox.

Steps to reproduce

Set up two mail accounts: [email protected] as a proper email account with a mailbox and [email protected] with all emails redirected to [email protected]. (It doesn't make a difference, if [email protected] has a mailbox enabled or not.)

[email protected] -> [email protected]

Set up the spam filter on both accounts. I set mine to delete spam right away, but you can just keep the default ("mark as spam").

Now, when you send an emails to [email protected], it will have Spamassassins tags in the email header, but when you send emails to [email protected], they will end up in the same mailbox but will have no spamassassin tags in the emails header and they will not be scanned.

Other notes

I am using Plesk 9.5.4 on Ubuntu 8.04 LTS with the default Qmail.

I've observed this bug since Plesk 8, but I can't stand it any more and would appreciate any hack or fix.