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This bug is created as a clone of upstream ticket:
https://fedorahosted.org/freeipa/ticket/4232

For example:
{{{
$ ipa dnsrecord-add testdomain.com. testdomain.com. --mx-rec="5 mx.testdomain.com."
ipa: ERROR: invalid 'name': empty DNS label
}}}

It is complaining about the second "testdomain.com.".

The workaround is to use a "@" (for the domain itself) or a relative name e.g.

{{{
$ ipa dnsrecord-add testdomain.com. @ --mx-rec="5 mx.testdomain.com."
# testdomain.com. MX 5 mx.testdomain.com.
$ ipa dnsrecord-add testdomain.com. subdomain --mx-rec="5 mx.testdomain.com."
# subdomain.testdomain.com. MX 5 mx.testdomain.com.
}}}

This request is already fixed in upstream FreeIPA project. Please refer to the linked ticket for additional details and related commits.

Verified using ipa-server-4.1.0-16.el7.x86_64


# ipa dnsrecord-add testrelm.test. testrelm.test. --mx-rec="5 mx.testrelm.test."
  Record name: @
  MX record: 5 mx.testrelm.test.
  NS record: cloud-qe-14.testrelm.test., cloud-qe-3.testrelm.test.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-0442.html