Samba servers are capable of providing browse lists to foreign subnets with the
remote
announce
option. This is typically sent to the local master browser of the foreign subnet in question. However, if you do not know the address of the local master browser, you can do the following:
[global]
remote announce = 192.168.234.255/ACCOUNTING \
192.168.236.255/ACCOUNTING
With this, Samba will broadcast host announcements to all machines on subnets 192.168.234 and 192.168.236, which will hopefully reach the local master browser of the subnet. You can also specify exact IP addresses, if they are known.