I’ve problem with send as funktion from outlook with KOE since upgrade to UCS 4.3 I get this error in kopano spooler.log:
Wed Apr 11 17:12:29 2018: [error ]  HRESULT SMTPToZarafa(LPADRBOOK, ULONG, const ENTRYID*, ULONG*, ENTRYID**): ResolveName failed: not found (8004010f) Wed Apr 11 17:12:29 2018: [error ]  User "Christian Kraus" is not allowed to send as user or group "officeckc@MAILSERVERNAME.domain.local". You may enable all outgoing addresses by enabling the always_send_delegates option.
the officeckc@MAILSERVERNAME.domain.local should be officeckc@maildomain
I get this if send/reply from shared mailbox as delegate with own user address in sender field, if selecting the sharedmailboxuseraddress (officeckc@maildomain) as sender address it works
Does anyone have same issue or a hint on where I may look for to resolv this ?
I’ve first thought it’s problem after z-push Upgrade and did a post on Kopano Forum too - but after further investigations from me it seems not to be z-push as this was updated in front of UCS 4.3 Upgrade -maybe a problem with the new postfix version ?