Re: Still not possible to send mail to domain libc.org

[Harald Becker <ralda@gmx.de>]

Hi Rich !

On 23.04.2015 22:52, Rich Felker wrote:
> Indeed, that does sound odd. I've filed a ticket with my registrar and
> for now I'm moving DNS hosting to my own nameserver but it may take 24
> hours to update and propagate. Hopefully that fixes things.

So let me retry the message tests tomorrow.

>> I know this is not a prove, but it looks more like a general problem
>> ... most likely, the mail relay is expecting to have the MX lookup
>> return an IP address, not a name.
>
> MX is never an IP address; that's not even valid and not possible to
> represent in DNS. It's always a name, and it's required to be an A
> record, not a CNAME. Check MX for any other domain and you'll find an
> A record.

I'm not a DNS expert, so I may not use the correct notation.

Currently the lookup has got even more ugly:

nslookup -q=mx libc.org

returns: brightrain.aerifal.cx

... but when I try to do MX lookup for brightrain.aerifal.cx, I can't 
get any authoritative address, only for A records.

Are you able to add also an MX entry for brightrain.aerifal.cx ?

All the other domains I tried return an authoritative address for MX 
lookups too, not only for A record lookup.

I searched a bit on the net, and may be this hits a qmail DNS lookup 
problem disused at different places. Looks like they are fighting which 
strategy is best for the lookups ... this is bad, but I can't do 
anything here.

Harald