On Fri, Aug 27, 2010 at 11:22:05AM +0200, Ronald Klop wrote: > Mandatory? I'm googling, but can't find a document that declares it > mandatory and only sendmail seems to do it. > I think it is lame to use DNS info to rewrite e-mail addresses, but > the person who made it 'mandatory' will have good reasons for it. > > Does somebody have a pointer to the specs about this?
First hit on Google: http://www.ferris.com/2008/09/08/why-you-shouldnt-mix-cname-and-mx/ Bottom line: don't use CNAMEs, ever, unless you know ***exactly*** what you're doing. It's been like this for a very long time. -- | Jeremy Chadwick j...@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
