Dns reverse

I asked the manager of my ISP to do the reverse dns as follows:

mktconnection.com.br ns1.mktconnection.com.br......................177.1.138.43 ns2.mktconnection.com.br......................177.1.138.44

shackvirtual.com.br ns1.shackvirtual.com.br..........................177.1.138.45 ns2.shackvirtual.com.br..........................177.1.138.46

He informed me that it was done the reverse dns and sent me the following test:

;; Received 251 bytes from 193.0.9.1#53(f.in-addr-servers.arpa) in 198 ms

1.177.in-addr.arpa. 86400 IN NS F.DNS.BR. 1.177.in-addr.arpa. 86400 IN NS A.DNS.BR. 1.177.in-addr.arpa. 86400 IN NS B.DNS.BR. 1.177.in-addr.arpa. 86400 IN NS D.DNS.BR. 1.177.in-addr.arpa. 86400 IN NS C.DNS.BR. ;; Received 129 bytes from 199.212.0.53#53(tinnie.arin.net) in 127 ms

138.1.177.in-addr.arpa. 86400 IN NS ns03-cta.brasiltelecom.net.br. 138.1.177.in-addr.arpa. 86400 IN NS ns04-bsa.brasiltelecom.net.br.

;; Received 109 bytes from 200.160.0.10#53(A.DNS.BR) in 9 ms

42.138.1.177.in-addr.arpa. 86400 IN CNAME 42.40-47.138.1.177.in-addr.arpa. 40-47.138.1.177.in-addr.arpa. 86400 IN NS ns1.shackvirtual.com.br. 40-47.138.1.177.in-addr.arpa. 86400 IN NS ns1.mktconnection.com.br. 40-47.138.1.177.in-addr.arpa. 86400 IN NS ns2.shackvirtual.com.br. 40-47.138.1.177.in-addr.arpa. 86400 IN NS ns2.mktconnection.com.br. ;; Received 171 bytes from 201.10.124.26#53(ns03-cta.brasiltelecom.net.br) in 17 ms

When do tests to see if there is reverse dns I get this response:

Checking the reverse DNS IP [177.1.138.43]: $ Host 177.1.138.43 Host 43.138.1.177.in-addr.arpa not found: 2 (SERVFAIL)

Result: ERROR, IP [177.1.138.43] does not resolve to a valid host.

I wonder if there is any more local configuration I have to do in named (bind) to run my reverse correctly.

My ISP tells me they've done all I had to do to reverse dns and that I should do some local settings on linux for this to work.

Proceeds this statement??