Forum Discussion

AllrecipesDCO_1's avatar
AllrecipesDCO_1
Icon for Nimbostratus rankNimbostratus
Sep 18, 2014

Required Types of DNS Records

I am using GTM ZoneRunner to maintain/configure DNS records, and I've got a somewhat confusing situation I'm trying to figure out.   I currently have a subdomain, "sub.domain.com", which is just a...
BIG-IP DNS
management
Cory_50405's avatar
Cory_50405
Icon for Noctilucent rankNoctilucent

You'll need to create the MX record for sub.domain.com to point to thirdparty.email.com as the mail server.

 

The TXT/SPF record is for receiving email servers to verify via DNS that the email arriving at its mail server is authorized to be sent by the sending mail server.

 

The two records don't depend on each other from a DNS perspective, so you can have one without the other. However in order for SPF to work correctly in your environment, as well as route mail appropriately, both records need to exist.

 

AllrecipesDCO_1's avatar
AllrecipesDCO_1
Icon for Nimbostratus rankNimbostratus
Sep 22, 2014
Thanks Cory! I found some more information that indicates I won't be able to make either the MX or the TXT/SPF record, because you can't create a new record for something with a CNAME. I'm continuing to investigate, but I think I'll have to create an entirely new subdomain for the mail portion of what we want to do.