On 2014-04-08, Heiko Schlittermann <[email protected]> wrote: > > If I understand well, Exim needs to use the DNS directly, MX lookups, > SRV lookup and the like is nothing getnameinfo() & co can do for us. > > If Exim gets the MX name from DNS, what do I expect for the MX name's IP? > DNS too, or obeying nsswitch.conf by using the libc resolver?
Under what circumstances is the DNS-served IP address of mx.fakemx.net of any use? I can put a more predictable value in /etc/hosts and quickly reject emails for which this is the only destination. > How trustworthy is an address I got from /etc/hosts? (But nss and the > libc resolver won't tell me the origin of the address anyway.) About as trusted as the exim binary which wants to do the lookup, and the libc binary doing it. -- umop apisdn -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
