This error message is displayed on the DNS server.
This error indicates that an alias (CNAME) is associated with another type of DNS record.
The DNS system allows you to set up an alias to a system using the CNAME record. See the following example:
alias1 IN CNAME host1.domain1. |
The alias alias1 cannot appear in any other type of record. Only the actual name of the host can be used. So, if you wanted to use this host as a mail exchanger, the record
alias1 IN MX 10 host2.domain1. |
Instead, you should use:
host1 IN MX 10 host2.domain1. |
Also, this error might occur without explicitly setting the left side of a record. The DNS system defaults the left side to the last given left side. So you might have the following in a named database file:
host1 IN A 123.124.125.126 IN HINFO Sun Solaris alias1 IN CNAME host1.domain1. IN MX 10 host2.domain1. |