[SOLVED] Reverse DNS with multidomain email server

[Mistoffeles]

Given that 43.17.24.10-in-addr.arpa resolves to mail.my-example.com, how do I provide for mail.my-other-example.com to pass an rDNS lookup?

[raj]

u dont need to give ALL the domain on zimbra reverse mapping..only the Zimbra Server FQDN
i.e:
if zimbra servers FQDN is : zimbra.yourdomain.com
and
you have domain.com, domain2.com, domain3.com hosted on it

you will give only zimbra.yourdomain.com the reverse DNS entry..as the target server will see mail coming from "zimbra.yourdomain.com" not from domain.com

Raj

[Mistoffeles]

OK, obviously I didn't understand rDNS well enough. So let me get this straight:

if I have a server, zimbra.mydomain.com, and it also provides email services for zimbra.mikesdomain.com and zimbra.davesdomain.com, any server doing an rDNS on an email sent from my server is looking for the sending server, which is always going to be zimbra.mydomain.com, even if the email were sent by dave@davesdomain.com.

yes?

[phoenix]

Originally Posted by Mistoffeles

OK, obviously I didn't understand rDNS well enough. So let me get this straight:

if I have a server, zimbra.mydomain.com, and it also provides email services for zimbra.mikesdomain.com and zimbra.davesdomain.com, any server doing an rDNS on an email sent from my server is looking for the sending server, which is always going to be zimbra.mydomain.com, even if the email were sent by dave@davesdomain.com.

Yes, that's correct.