Greylisting.... at last.
http://download1.parallels.com/Plesk/PPP9/plesk-9.2.1-for-rpm-based-os.html
Parallels Plesk Panel 9.2.1
[+] Greylisting - Greylisting spam filtering is now available in Parallels Plesk Panel.
[+] Migration Manager - New Migration Manager feature allows you to transfer your data from other Parallels Plesk Panel installations.
[+] Migration from cPanel - Migration Manager now supports migration from cPanel to Parallels Plesk Panel.
[-] Courier-IMAP shipped with Parallels Plesk Panel not supporting mailbox quota larger than 2 GB bug is fixed.
[-] If DNS record <lists.> being duplicated if it exists in DNS zone template and a domain is created with Mailman mailing list enabled bug is fixed.
[-] Autoresponder replying with incorrect FROM address when incoming message was sent to multiple addresses bug is fixed.
[-] Mail aliases not synchronized correctly with corresponding mail account bug is fixed.
[-] Incorrect hint for server-wide black list bug is fixed.
[-] Messages sent to a mail group are not delivered to the sender when Postfix mail server is used bug is fixed.
[-] New IP addresses not being added to Webmail configuration files, leading to inability to access Webmail bug is fixed.
[-] Mailbox quota set incorrectly via API-RPC bug is fixed.
[-] File manager unable to enter folder with name '0' bug is fixed.
[-] Postfix not being able to send e-mail messages with attachments bug is fixed.
[-] Outgoing mail from domain aliases not being signed by DomainKeys bug is fixed.
[-] "proc_close() failed: mktime()" error displayed upon activation of new Firewall rules bug is fixed.
[-] Qmail unable to write or delete smtp_poplocks, displaying errors like "Unable to delete expired smtp_poplocks: database is locked" bug is fixed.
[-] Backup failing with "Could not parse status disabled by value '32'" error bug is fixed.
[-] Inability to authenticate via IMAP/POP3 after the upgrade bug is fixed.
[-] Backup file content not being properly restored due to incorrectly applied restore conflicts resolution policy bug is fixed.
[-] Client-related information not shown in custom button's query string even when it is required bug is fixed.
[-] Domain aliases not inheriting domain's mail policy settings when Postfix mail server is used bug is fixed.
[-] Red color of traffic indicator on a domain bug is fixed.
[-] Acronis True Image Server Module not working bug is fixed.
[-] Inability to update scheduled task due to 'Object not found: Scheduled Task' error bug is fixed.
[-] Spamassassin not checking mail sent to mail account aliases bug is fixed.
[-] Parallels Plesk Panel not checking the availability of mailing lists created directly through Mailman bug is fixed.
[-] No warning about remote FTP repository not being set up when trying to schedule a backup task to remote FTP repository that has not been set up yet bug is fixed.
[-] Mail group members receiving messages with empty subject from "POP3 service user" when sending message to mail group bug is fixed.
[-] Inability to restore data from backup file larger than 2GB bug is fixed.
[-] Database users not being restored properly during the restoration of a domain that already exists in the system. bug is fixed.
[-] DNS records not migrating properly due to 'mail.<domain>.' CNAME record bug is fixed.
[-] Missing link to the description of event handler variables in documentation bug is fixed.
[-] Default language information not being backed up for domain administrator accounts bug is fixed.
[-] Autoresponder trying to send autoreplies to spam messages bug is fixed.
[-] Mail aliases using reserved system aliases such as 'info' not delivering mail bug is fixed.
[-] Running PHP as FastCGI application causes 403 Forbidden error when trying to access the web site bug is fixed.
[-] Autoresponder on a mail alias missing after the upgrade to Parallels Plesk Panel 9.0.x bug is fixed.
[-] Backup Manager incorrectly reporting warnings as errors when used via CLI bug is fixed.
[-] Inability to access backup file with "Unable to find Backup dump object" error on openSUSE 11 bug is fixed.
[-] "SMTP AUTH" option not working in Qmail, leading to inability to authenticate with Outlook mail client bug is fixed.
[-] Postfix incorrectly reporting an error when mail handler returns STOP bug is fixed.
[-] Statistics utility not reconnecting to MySQL and causing statistics calculation to fail bug is fixed.
[-] migration.log file is stored in $HTTPD_VHOSTS_D bug is fixed.
[-] Inability to remove exclusive IP addresses from client and reseller template IP pools, where these IPs are still displayed as shared bug is fixed.
[-] Wordpress not requesting the requirement to have safe_mode off bug is fixed.
[-] Option 'check for simple mail passwords' not working on 64-bit systems bug is fixed.
[-] Inability to make an application from the Application Vault available to all users bug is fixed.
[-] Webmail not working on a domain if domain's IP address was added after the webmail was set up on the server bug is fixed.
[-] Inability to install Application Vault applications if open_basedir parameter is switched on bug is fixed.
[-] Converted backup file is not recognized as a valid backup file bug is fixed.
[-] Backup creation time is displayed in GMT instead of actual time bug is fixed.
[-] Overuse policy cannot be changed if limits are already exceeded bug is fixed.
[-] Syntax errors in SELinux policy configuration file on RHEL 4 bug is fixed.
[-] Size of backup file located on remote FTP server being reported incorrectly bug is fixed.
[-] 'Unable to get options for SPF filter' error reported when mail is sent from localhost bug is fixed.
[-] Cannot remove non-existent IP addresses using Parallels Plesk Panel GUI bug is fixed.
[-] Updating Parallels Plesk Panel license key via GUI hangs Parallels Plesk Panel under some circumstances bug is fixed.
[-] IP addresses removed from Parallels Plesk Panel GUI are not removed from Apache config bug is fixed.
[-] Backed up content of web users' websites is corrupted when backup file is converted to Parallels Plesk Panel 9 compatible format bug is fixed.
[*] DNS Settings for a domain on domain Home page - DNS Settings button for a domain is now located on domain's Home page.
[*] Configuring Parallels Plesk Panel to work behind NAT - Description of configuring Parallels Plesk Panel to work behind routers and NAT was added to Administrator's Guide.
[*] Bugfixes and improvements - A number of issues reported by the customers were fixed, multiple other bugfixes and improvements were made.
Legend:
[+] new feature
[-] bug fixed or removed
[*] bug fixed and improvement made