On Sat, 4 May 2019, at 11:44, Vytis Marciulionis via mailop wrote:
DNS Error: 6443565 DNS type 'mx' lookup of example.com responded with
code NXDOMAIN Domain name not found: example.com
Has anything changed and now we can consider "no MX record" a valid reason
to not deliver messages to that domain?
Looks like the domain was unknown. Of course, then the MX lookup
fails. But there is a difference:
$ host -t a example.com.
example.com has address 93.184.216.34
$ host -t mx example.com.
example.com has no MX record
$ host -t a probablynotexisting.example.com.
Host probablynotexisting.example.com. not found: 3(NXDOMAIN)
$ host -t mx probablynotexisting.example.com.
Host probablynotexisting.example.com. not found: 3(NXDOMAIN)
--
-- Andreas
:-)
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