I'm confused with the DNS setup that we currently have, and have had since my joining this company. We use DynDNS to host our zones with the Custom DNS service. Our company.org DNS zone uses the following services:
Host TTL Type Data
company.org 60 A 18.104.22.168
company.org 43200 MX 5 company.org.
43200 CNAME company.org.
We have 2 in house DNS servers with Active Directory implementation and our site reverse lookup zones running on Server 2003. Our local domain ends in company.net, our public one used for e-mails and website is company.org
Our Forward Lookup Zones:
Reverse Lookup Zones
I have the Root Forwarders pointing to our ISP DNS servers. Is this correct?
I want to make sure I have the DNS configured correctly to avoid any conflicts. The reason is I'm concerned that e-mails sent from our e-mail server, are not going to end up on a blacklist b/c of misconfiguration, and if the DNS is configured correctly.
Important: There are NO problems right now, everything is working fine, but I would just like a better understanding of this setup that I have, as well as any recommendations that may otimize it.
Also on the Advanced Delivery settings of the Default SMTP Virtual server, I have the FQDN as mail.company.net. If i check the DNS it shows domain as valid. Is this the correct e-mail name, shouldn't it be mail.company.org, since that is our public dns? Also, performing a reverse dns lookup on incoming messages, should this be enabled to reduce spam, or keep it disabled? And finally, as to configure external DNS server for this virtual server. I currently have nothing in there. Should I put the dyndns ips or our ISP ips in there?
Thanks, I know this is long, and if I could assign 1000 points i would.