Plesk 11.5 - plus addressing

[szisti]

I've been google this for a while now but could not find any solution

Before I've moved to plesk I had the plus addressing enabled on my server (meaning xyz+anything@example.com was delivered to xyz@example.com)
Since moved to plesk this stopped working

In default I get a "user unknown" error

If I enable the "recipient_delimiter" function in postfix / main.cf, the emails just get lost

I've found forum posts from 2008/2009 explaining this issue, but it seems that even 5 years later this is not working

Is there any solution or workaround to get this working?

This (I believe) should be quite simple to solve

Cheers,
Steve

 

[Nikolay.]

AFAIK, this is not supported by Plesk.