Changed mailserver from Courier to Dovecot - Open Xchange inbox shows no new emails

[mthiel1]

Hi!

i changed the Plesk mailserver from Courier to Dovecot. All went good, but after the Install i can not see new E-Mails in my Inbox. Even the Search does not Work.

I can change the Mailserver again and use Courier. This works and i can see my emails. But only with Courier.

Some details:
Inbox has 100 E-mails. After scrolling down to the first emails, i can even see the newest email. But i have to scroll down and load all E-Mails.

Changing "Sort by" from "Date" to "Unread" all emails appear, even the latest. But changing to "Date" the newest email is missing again. Only a Number on my Inbox button shows me there has to be a new email in there.

The Open Xchange Team can not find any errors, the open xchange log looks good.

Does anyone have the same problem?

 

[mthiel1]

PS: i have set up a new testserver with plesk and open xchange to test the behavior, if someone of the plesk-team wants to check it out.

 

[MarkusT]

Got some News from the Open Xchange Team (owner of dovecot):

They say:
Dovecot is probably not up to date. They use the ESORT-extension of the mail server. And Dovecot in Plesk seems not to have it. Or it is not enabled.

How is it?
Will Plesk get a updatet version of dovecot and involve the extension?