Brad Knowles wrote: > The receiving server is doing address canonicalization, as required by > the RFCs. The fact that your server is not doing the address > canonicalization is a serious bug, and should be fixed. > >> Any thing I can do to fix this? > > The real solution is not to use CNAMEs at all in your DNS, but instead > to have the hostnames resolve directly into the appropriate IP > addresses, and to make sure that the reverse DNS for that IP address > includes all the appropriate hostnames.
How does one implement the real solution when the DNS records that are being virtual hosted are from different registrars? Since I only have one IP address, the reverse DNS would have to be handled by the outfit I'm hosting from, right? I didn't know you could even have more than one name come up in a reverse DNS lookup. I thought it was always supposed to be the canonical name only (if I'm using that term correctly). I also wonder why the RFC's require address canonicalization in email like that. That seems a holdover from a bygone era. The reason I have all the CNAME's is so that I can move to a different IP address and have to change the DNS record in only one place. I don't mind getting rid of the CNAME's but getting the reverse DNS all configured correctly will be interesting. Scott ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp
