On Wed, May 10, 2006 at 08:55:15PM -0400, David F. Skoll wrote: > > For example: during the registration process IDNL (the Dutch .nl > > registry) will check for valid MX's; if these don't exist an error > > message is generated.
The idea is to disable mail from/to certain subdomains, eg, you publish: www IN MX 0 _not_valid_for_email causing www.yourdomain.tld. to be invalid for email. > Why? I am unaware of any RFCs that require a domain to accept e-mail. The dutch domain registrar uses a rather strict and sometimes illogical set of rules. Some of the rules are written here: http://www.sidn.nl/ace.php/c,728,2892,,,,Annex_1_Technical_Requirements.html But there are also some unwritten rules. For example, any "secondary" NS cannot have a higher serial in the SOA record as the "primary" NS. This is a really odd requirement in case you don't distinguish, internally, between primary and secondary nameservers (all our nameservers are "primary", in a way, and are fed by a common database backend). I seem to recall there's also a requirement that one of the registered contacts (I believe admin-c) has to point to an email address at the domain itself, but I cannot easily find it. This would explain why the domain needs to have MX records (or an A record). > Does the Dutch registry periodically recheck? Because it would > be pretty easy to throw out the MX records once the domain has been > registered. They don't recheck as far as I know. -- Jan-Pieter Cornet <[EMAIL PROTECTED]> !! Disc lamer: The addressee of this email is not the intended recipient. !! !! This is only a test of the echelon and data retention systems. Please !! !! archive this message indefinitely to allow verification of the logs. !! _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
