On Fri, Feb 21, 2020 at 08:37 Henning Follmann <hfollm...@itcfollmann.com> wrote:
> On Fri, Feb 21, 2020 at 12:38:45PM +0100, john doe wrote: ... > Don't do THAT! > > RFC2181 section 10.3 says you can't point your MX record to a CNAME > Maybe that's why Namecheap has the MXE record that points to an IP. Besides the relevant RFCs, can anyone recommend a good book that covers all this. I have a couple of the O'Reilly books on "Postfix" and "DNS and Bind" and I am going back to refresh myself, but any other recs? Thanks. -Tom
