著者: Suresh Ramasubramanian 日付: To: Andreas Metzler CC: exim-users 題目: Re: [Exim] "550 cannot route to sender address" from remote smtp.
now what?
Andreas Metzler writes on 10/12/2003 10:48 PM:
> Sorry if I gave the impression that MXes pointing to CNAMES were
> acceptable, I had hoped that by explicitely stating that "or a CNAME
> resolving to an A or an MX record" it would be clear that any other
> use of CNAME was incorrect.
even this is quite bad - as the MX could well point to a CNAME.
using CNAMEs anywhere in mail delivery is a bad idea anyway - needless
repeated / recursive queries of your resolver.
