Without a valid reverse DNS record, many ISPs will block your email .
As the name states, these records do the reverse of what a normal DNS A record does — they map IP addresses back into host names.
Always dynamically update DNS A and PTR records NOTE: See Netsh commands for DHCP database cleanup interval Power Shell is the definitive command line interface and scripting solution for Windows, Hyper-V, System Center, Microsoft solutions and beyond. Hot Scripts offers tens of thousands of scripts you can use. d Bforums offers community insight on everything from ASP to Oracle, and get the latest news from Data Center Knowledge.
You do not need to disable dynamic DNS updates if: However, if you have configured your host to act as a DHCP client/server and you make use of the private IP address space (including 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16) specified in RFC1918, you should turn off the dynamic DNS update feature.
As a server admin, I don’t know much about how to build a big list or write compelling copy to boost conversion rates, but I do know that having the right DNS records is key to successful email delivery.
The 3 Records you must know for good email delivery are: These are the 3 core records you must have correct for sending email.
Only if you know with certainty that the updates get sent only to a local DNS server should you run the Dynamic DNS Updates service.
Most home users who use DSL/Cable routers as DHCP/NAT servers to facilitate multiple host connections to the Internet should turn off dynamic DNS updates.To resolve this issue, create a reverse lookup zone for the subnet that hosts the client computer in DNS.