hello,list, I'm a little confused that why the CNAME for MX records is disobedient to RFC? For example,some a domain is 'ddd.com',whois MX is 'mx.ddd.com',while the 'mx.ddd.com' is aliased to another A record as 'split.ccc.com'. Why this case breach the RFC? Thanks. -- Jeff Pang NetEase AntiSpam Team http://corp.netease.com