著者: Graeme Fowler 日付: To: Exim-Users 題目: Re: [exim] Exim trying to send email to A record of recipient domain
On 9 Feb 2016, at 14:29, Konstantin Boyandin <lists@???> wrote: > The above Exim behaviour has happened just few times. Nameservers'
> responses are being monitored 24/7 and they didn't show any quirks.
With the same granularity that Exim has? Are the resolvers the same in each case?
> Question: does Exim uses /etc/hosts records (as specified in
> /etc/nsswitch.conf ) before trying DNS resolution? Looks like it doesn’t.
Not for an MX record, no - there’s no way to indicate an MX in /etc/hosts.
It *might* drop back to that for A lookups, depending on the lookup order in /etc/nsswitch.conf.
