Problem configuring lmtp on cyrus backend

Dave McMurtrie dave64 at
Wed Mar 16 09:18:13 EDT 2011

On 03/16/2011 09:12 AM, Michael Menge wrote:
> Hi,
> i have a problem configuring cyrus backend in a almost traditional
> murder setup.
> I have one master process which starts the forntend and backend services.
> The forntend services use /etc/imapd_fe.conf as config file and listen
> on the external network interface and the backend services listen to
> the internal network interfaces and use /etc/imapd_be.conf
> The lmtpdproxy delivers the mail to the backend using lmtp over tcp.
> The backend lmtpd asks the mupdate server where the mailbox is,
> which results in the "wrong" answer that the mailbox is remote.
> The backend tries to proxies the mail to an other lmtpd
> on the same backend. This results in an infinite loop.
> I tried this with 2.4.6 and 2.3.16.
> AFAIK the backend config must contain the mupdate_server
> because create mailbox, rename mailbox and delete mailbox
> information must be send to the mupdate master.
> But if mupdate_server is configured lmtpd will ask
> the mupdate_server where the mailbox is, which will always
> result in an "remote mailbox" as answer
> What do i need to change?

If you're running 2.3.x on your frontends and 2.4.x on your backends, 
you need to upgrade your frontends.



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