Just a remark on reverse DNS.
We have a mail server on a separate IP. The IP is listed in ISPConfig's interface list but there is no web attached to it => no reverse DNS record is created then.
I have configured it manually in the zone file, and I also found out that just adding a
Code:
$GENERATE 1-255 $ PTR ip-netA-${0,3,d}.domain.com.
block will not help as it will generate SERVFAIL for the entire zone. When using the Generate-statement it seems you will have to manually exclude IPs that are already manually defined.
Just my 2c for today.
Regards
~jm