do i need to set a ptr record for every IP on server or just main server ip?

[roly]

hi guys

do i need to set a reverse dns ptr record for every IP on the server or just the main server ip?

thanks in advance

roland

 

[zEitEr]

Hello,

For that IP, from which Exim is sending emails. Of course, it's not bad to have PTR records for all of your IPs.

 

[roly]

thanks alex

 

[nobaloney]

@roly,

Note that setting rDNS from your controol panel doesn't necessarily mean it will be visible on the 'net; your upstream provider needs to either set rDNS for you, or delegate it to your nameservers, or it won't work. Most upstream providers don't delegate it to you unless you've got at least a /24 delegation, but some do. So the first thing to do is, if you're not sure, ask them.

Jeff

 

[roly]

@roly,

Note that setting rDNS from your controol panel doesn't necessarily mean it will be visible on the 'net; your upstream provider needs to either set rDNS for you, or delegate it to your nameservers, or it won't work. Most upstream providers don't delegate it to you unless you've got at least a /24 delegation, but some do. So the first thing to do is, if you're not sure, ask them.

Jeff

hi jeff

thanks for the reply, yes my upstream provider is OVH and you can set your own rDNS from within their control panel. so just to clarify if i have numerous domains on numerous ip's, they all get sent from the main server ip and hence only rdns is required for that ip?

 

[interfasys]

hi jeff

thanks for the reply, yes my upstream provider is OVH and you can set your own rDNS from within their control panel. so just to clarify if i have numerous domains on numerous ip's, they all get sent from the main server ip and hence only rdns is required for that ip?

That's correct, but you could make some modifications to Exim and add rDNS entries for all those IPs that Exim will use.

 

[roly]

that's interesting, i may take a look at that, thanks.