[Dovecot] doveadm commands returning 139 at director servers

Hello,

I have configured director in front of dovecot imap/pop/lmtp servers. 

When I need to manipulate a user mailbox, I use doveadm commands at director server's, with -S option. But some commands return exit code 139 when command returns more than 40 entries (I think).

For example, the command:

sudo doveadm fetch -u amateo hdr mailbox Trash HEADER Subject "nyctalus11/"

executed at the backend server returns 952 mails, but executed at 

director server with -S option, returns only 40 mails and exit code 139.

I'm using dovecot 2.1.5 and I attached doveconf -n at director and 

backend servers.

-- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868887590 Fax: 868888337