tell sendmail to use a different dns server?

[Zhang Weiwu]

Zhang Weiwu wrote:

> Hello. I'm using the dns service on a router box. This router does 
provide dns service, on which every computer in the LAN has a local domain 
name (computername.our.lan)
>
> Now the built in dns server's function is limited; it does not relay MX 
type of record. Thus sending mail using sendmail always get hostname lookup 
failure.
> 1. If I change my name server address in resolv.conf to use my ISP's dns 
server, I cannot access lan computers using local hostnames.
> 2. If I use our dns server, I cannot send mails through sendmail.
>
> So what should I do? Can I ask sendmail to use ISP's dns server, while 
the rest programs use local dns server? 

I just realized I can do this in resolve.conf:
====
# our LAN's dns server
nameserver 192.168.0.1
# ISP
nameserver 202.101.103.54

Hope this is the best method.

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