After Upgrading zimbra ignores my serveral personalities

[Nextasy]

Hey - after upgrading from 5.0.18 to 6.0. i have one issue with the Personality Feature. I have one local domain and several personalities (yahoo for example) - from case to case, i chose different personalities to send. This works a couple of years - after upgrading, he only want to send my mails (i use a smarthost with smtp auth, this works) with the local domainpart (non dns resolvable, only local).

it seems, that zimbra now ignores the from settings and takes the local one - is that the reason why the mta bounced the mail with 550 relay denied?