192.100.1 is owned by the following. Have they delegated DNS to you for reverse lookups? inetnum: 192.100.1.0 - 192.100.1.255 netname: CCWR descr: Computing Centre for Water Research descr: Private Bag X01 descr: Scottsville, 3209 country: ZA admin-c: AK115-AFRINIC tech-c: AK115-AFRINIC status: ASSIGNED PI mnt-by: TF-192-100-1-MNT mnt-lower: TF-192-100-1-MNT changed: hostmaster@xxxxxxxx 19910308 changed: hostmaster@xxxxxxxx 19980803 changed: hostmaster@xxxxxxxxxxx 20050221 source: AFRINIC person: Arne F. Kure address: Computing Centre for Water Research address: Private Bag X01 address: Scottsville address: 3201 address: ZA phone: +27 331 260 5175 e-mail: kure@xxxxxxxxxxxxxxx nic-hdl: AK115-AFRINIC changed: hostmaster@xxxxxxxx 19960131 changed: hostmaster@xxxxxxxxxxx 20050221 source: AFRINIC If you just put 192.100.1 as a placeholder below, then I would still look at whether the DNS for your IPs has been delegated to the right name server. Try something like: dig +trace 2.1.100.192.in-addr.arpa and see where it stops or fails. Good luck, -Allen On Wednesday 08 February 2006 12:41, Bob Smith wrote: > Hey Gurus, > > I'm running RH9, and have not had much problem with setting up DNS, with > one exception: getting the reverse DNS lookup to work properly from > outside of the box. I have forward and reverse dns zone files, but > I think I'm missing something. Both are listed in the named.conf file, > but when I use some of the web tools, or do a reverse lookup, it can't find > the domain. Also, some mail servers are now looking for a domain tag > in place of the in-addra.arpa basic declaration. > > Any help would be appreciated. > > Thanks, > > -Bob > > Entry in named.conf: > zone "domain.com" { > type master; > file "domain.com.zone"; > }; > > zone "1.100.192.in-addr.arpa" { > type master; > file "1.100.192.in-addr.arpa.zone"; > }; > > Here's a sample of the forward zone file (domain.com.zone) > ------------------ > $TTL 86400 > domain.com. IN SOA machine.domain.com. > webmaster.machine.domain.com ( > 2006010902 ; serial number > 28800 ; refresh interval > 7200 ; retry interval > 604800 ; expire > 86400 ; time to live > ) > > ; > ; Name servers > ; > domain.com. IN NS machine.domain.com. > domain.com. IN A 192.100.1.2 > machine.domain.com. IN A 192.100.1.2 > ns1.domain.com. IN CNAME machine.domain.com. > domain.com. IN MX 10 machine.domain.com. > ; EOF > > And here's the 1.100.192.in-addr.arpa.zone file > $TTL 86400 > @ IN SOA ns1.domain.com. webmaster.machine.domain.com ( > 2006012102 ; serial number > 28800 ; refresh interval > 7200 ; retry interval > 604800 ; expire > 86400 ; time to live > ) > > @ IN NS ns1.domain.com > 2 IN PTR domain.com. > ; EOF -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list