Hello
you need separate configuration files for bearerbox, smsbox and sqlbox. Under “normal” circumstances, bearerbox and smsbox could share the configuration file, but if you intend to put sqlbox in the middle, you need smsbox to point to sqlbox’s port and not bearerbox: For example, to use this setup: bearerbox < --[13001]--> sqlbox < --[13005]--> smsbox You’d need something like this: kannel.conf (to use with bearerbox): group = core smsbox-port = 13001 … sqlbox.conf: group = sqlbox bearerbox-host = localhost bearerbox-port = 13001 smsbox-port = 13005 … smsbox.conf: group = core smsbox-port = 13005 … smsbox.conf can be exactly the same file as kannel.conf, you only need to change the smsbox-port. Hope this helps clarifying how it works. Regards.