Add a function to include Owncloud in Plesk, so administrator can configure for each customer a specific cloud-space.

When I first saw the option of create DBs, I thought it was something like I'm suggesting. MongoDB, MariaDB, CouchDB, etc, etc. This will be super cool. :)

I would like to use an E-Mail address as an outgoing E-Mail address with no postbox behind it. All E-Mails should be forwarded to another E-Mail address.
Currently you can set up forwarding but if you check "Use postbox" than the mails will be kept on the server although they have been forwarded. If you uncheck it, it is impossible to send emails from that address.

So please add at least an option to delete mails after forwarding them.

Allow the ability to assign separate SSL certificates for multiple mail servers.

Add HHVM support

Hi,
plz add mailman 3 as mailinglist software.

Most of RBLS are checking the SMTP Banner and currently only the first domain name is being used. To reduce scamming or to prevent being blacklisted you should apply myhostname with the according domain name.

if you would manage multiple Plesk servers that function very appropriate

At the moment by default any webmail interface is under domain webmail.<domain>

Some people would like to use custom one. For me personally it's important to have this as server-wide setting (I have basic workaround for this - custom domainWebmail.php), but it isn't perfect (many links to webmail service missing, e.t.c.).

And that's why we have plesk - user friendly interface.

You are currently not able to Alias a subdomain through plesk. Instead you must create the subdomain as a primary if you wish to alias it. In many situations it would make sense from an organizational standpoint to keep the subdomain under a main domain while still adding aliases to it. I do not believe this is a technical restriction of the webservers so it would be helpful if plesk allowed you to add aliases to subdomains.

I suggest you add a feature in Settings with which we can enable SPAM / VIRUS protection for newly created mailboxes by default.

Discussion here:

http://forum.parallels.com/showthread.php?287233-Anti-virus-and-anti-spam-enabled-by-default-on-mailbox-creation&p=715980#post715980

Add a DNS TTL per entry option instead of just SOA TTL.

This will make it more inline with products like cPanel etc and is very useful when using dynamic dns to have low TTL but other entries like mx can have a high TTL

t would be a good idea to have an SQL section where users can run optimization scripts like MYSQLTUNER etc and enter suggestioned changes in a GUI that directly change the mysql.conf directly and correctly.

An ability to monitor performance and tweak would be ideal, making the task of SQL performance monitoring and tweaking far easier.

Also optimize commands and other tasks could be run for this panel.

as well as optimize and the ability to add it to cron for weekly or monthly.

I'll like to create a hosting that only use Nginx as webserver. Also I'll like to do this with Node.js, but I think it will not be approved.

We have many support requests from our customers (non technical) to search logs and find if a message was sucessfull delivered and consume much from our support.

If the customer could search logs from a specific sender ou destination, filtering by date, will be great for us.

Some of security configuration requires GeoIP detection. It also useful for tracing and should be easy as adding '--with-http-geoip-module' option to configure command for the package.

Many mail servers have this feature. Please include in plesk possibility to add disclaimer to mail footer on specified domain.

Many Clients ask me how to add Disclaimer to mail footer automatically not from webmail.

It would be nice to provide mail SSL/TLS support with SNI for more domains from single IP

If I use FTP, I can make as many users as I want. For various reasons, using FTP is not optimal at my workplace. I'd like to be able to let each ftp user I create log in with chrooted sftp.

I'm able to modify /etc/passwd and /var/www/vhosts/example.org/etc/passwd to make it work, but doing that manually kind of defeats the point of using a tool like Plesk...

Specifically, I give the ftp user the same home directory, and shell as the initial sftp user has in each passwd file.

Allow management of greylist filters and configuration from the Plesk control panel instead of only from command line as is currently the case.