when we use external smtp server, sender need to be real mailbox not psaadm@locahost..

so we must go in "/etc/msmtprc" to change
auto_from off
from name@domaine.com

but this file can be overwrite....

i think we need extras options configuration in panel
for you information, i spend near 2 days to find this issue..

Please allow usage of Plesk Onyx (postfix) as Backup MX server

at the moment it is not possible to configure Plesk Onyx as Backup MX server, so even I have multiple Plesk servers available, when main production server is down, all e-mails in that time-frame is lost :((

if we could setup Plesk as Backup MX server, that would give us some redundancy so e-mail should be fine on backup mx server, until primary mx comes back online

There is a global setting for DKIM, incoming and outgoing.

Customers can choose if they want to have their outgoing mails signed using DKIM but they have no possibility to say: "I want to have the incoming ones checked"
Only the global setting "Verify incoming mail" will work.

I have been having all of my users use a sentence for their passwords. without spaces this is really going to confuse them. Just switching to plesk now.

So I am setting up the WebAccess for a Abonnement right now and I am trying to setup all settings so that the client has no insight to FTP nor any other hosting related data but mail only!

So the client should be able to manage mail accounts solely.

Now i have to insert a mailadresse at each mailaccount-blacklist.
i think it easier to use, i im able to handle a whiltelist/blacklist for all mailaccounts

I am sending mails from an external server, my Plesk Servers do not even have mail setup. Plesk offers the option to send notification mails (like backup errors,...) using an external SMTP server, but all mails get sent using the mail address
root@servername.domain.tld

My SMTP server does not have this mail address or even domain setup. I would like to set a custom email address for Plesk to send mails from in order to not have to set up a domain and mail address for every Plesk server.

like to be able to specify a date and time an email auto-reply is started and finished.

The implementation of the centralized smartermail in plesk onyx for windows is good, but it should also be possible to integrate this feature into the linux edition.

Many hosters provide both windows and linux hosting with ONE centralised mail solution. Since the integration for winodws is already done I suppose it shouldn't be too hard to integrate it into the linux version as well since smartermail is completely API based.

If you have several ip-addresses on your server it should be possible to choose a different certificate for each ip address.

Is was very helpful if we could change the text of the messages of DrWeb and Postfix bounce messages inside Plesk.

Allow greylisting control individually per user, while maintaining the control by domain option.

System could remember a certain number of old passwords (admin configurable) and prevent user from selecting these again.

Have had more cases than I'd like to admit where customer re-used a previously compromised password. If Plesk remembered the last x passwords used by that account it would help.

Also adding ability so Plesk checks a server configurable password blacklist before accepting customers new selection would be appreciated.

There is relatively new anti-spam tool - Rspamd. I think, it worth to be integrated with Plesk as an alternative to SpamAssassin. It shows better performance as the author says here http://rspamd.com/misc/2016/03/03/rspamd-performance.html

There is an spam filtering option to "Move to spam folder XXXX" on Linux, but not on Windows (Plesk 11+).

Unfortunately, horde doesn't work so well and every time when a message with broken header arrives, horde displays "Invalid Address" and no subject to all inbox messages. The described fix in https://kb.plesk.com/en/121175 doesn't work in this cases, forcing us to find the broken message manually (or scripting something to do the dirty job).

This feature should exists in Windows env as in Linux.

Plesk does not currently support DNS Whitelists like it does RBLs, such as the list at dnswl.org. There needs to be a way to add this from the Plesk UI.
The Postfix main.cf config directive is permitdnswlclient.
Whenever a Plesk upgrade happens, the setting, if added is removed and needs to be added back manually.