BIND 9.6 'named' throws the following message during startup claiming that it 
is illegal to use a CNAME/alias in the MX record.  I beg to differ.  There is 
no such standard nor requirement prohibiting the use of CNAME/alias in an MX 
record.



Message thrown at startup:

"named[3307]: zone MyDomain.com/IN: MyDomain.com/MX 'MX1.MyDomain.com' is a 
CNAME (illegal)"



Additionally in Chapter 6 - BIND Configuration Reference, Zone File, Discussion 
of MX Records states the MX records "must have an associated address record (A 
or AAAA) - CNAME is not sufficient."



Some people seem to think RFC 974 creates a standard which prohibits the use of 
CNAME/alias in MX records.  But very much to the contrary RFC 974 demonstrates 
that CNAME/alias is permitted in MX records.



ISC's message that a CNAME/alias in an MX record is illegal is incorrect and 
just an attempt by ISC to get people to go along with what is only a perceived 
rather than actual standard/requirement, and should be removed so as not to 
further the fallacy of this perceived perception of a standard/requirement, as 
it is neither a standard nor a requirement, and certainly not illegal.



Al Stu

 

_______________________________________________
bind-users mailing list
bind-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/bind-users

Reply via email to