reverse DNS, need to be performed for all static IP's?

[lkbryant]

hi

this is one question i always was a bit vague about

does the reverse dns need to be performed for all the static ip's for the domains in order for it to be fully verified by the other mail providers?

usually i just create a reverse dns for my main server's hostname. but for domains with static IP's, do i have to set a rDNS for them as well or just setting a rDNS for my main server's hostname enough?

i'm starting to think it's not enough..


*since my dc handles the rDNS, if i have over a thousand domains with it's own IPs, requesting rDNS for each one of those domains seems a bit unlikely *

 

[floyd]

If your concern is the mail server then realize this: all mail goes out on 1 ip, usually the main ip of the server or whatever you specified in the exim.conf file. You can have a thousand ip's and thousand domains on one server but all the mail is going to use just one ip. That is the ip for which you have to have the reverse set up.

 

[lkbryant]

that explains it, thx