mails are not delivered

Chris Fleming me at
Thu Dec 27 16:26:55 CET 2012

On Thu, Dec 27, 2012 at 06:25:19PM +0530, Subhrakanta Mishra wrote:
> Hi!
> I have setup Kolab 3.0 on CentOS 6.3. I had some issues during installation
> and configuration but was able to resolve them all.
> Now the situation is, the organisation is using google apps but they
> decided to have a legacy server for all user apart from top management. So
> I installed Kolab and configured dual delivery in google apps.
> So now I can receive mails on kolab but when I am trying to send mail from
> kolab to google apps users on the same domain, the mails are bouncing with
> the following error
> host
>[/var/lib/imap/socket/lmtp] said: 550-Mailbox unknown.
>     Either there is no mailbox associated with this 550-name or you do not have
>     authorization to see it. 550 5.1.1 User unknown (in reply to RCPT TO
>     command)
> I am newbie in this field. Kindly help me resolve this.

I don't really know what would cause this, but it would be great to have
a little more info on your setup, for example what server is the primary
server (Kolab or Google) have you added all the users to Kolab?

I found this page on the dual setup:

So it would be good to know what route you're using.


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