We recently set up our network. I must admit this is a new "land" for me. I am more a Software developer, not a Network Administrator but I had to get hands on the problem.
Some email providers, are rejecting our emails. AOL among others are complaining about server with no reverse dns. I found pretty good articles online about it but i have still some doubts and i want no chances when it comes to our live system.
This is my scenario.
I have my Domain Controller server (DC001), Exchange Server (EXC001) and i have like 10 different domains (for email addresses) like email@example.com, firstname.lastname@example.org, email@example.com. All of them pointing to the same user in our Active Directory. My domain in the network is ATL.LOCAL
I understand i have to set an A record witm mail.????, a MX record and PTR record... but where exactly?
Should i add these records to my MAIN domain (ATL.LOCAL) or should i add one for every mail domain i am using? mail.zzzz.com, mail.yyyy.com, mail.xxxx.com. My feelins are that i have to add them to each and every domain i might be sending emails from... right?
Please, help. Thank you so much.