Re: sendmail ignores /etc/hosts
Bob Nielsen <nielsen@primenet.com> writes:
> sendmail seems to ignore the entries in /etc/hosts, relying instead on
> doing a DNS lookup for each message. smail does this also. Is there a
> way to configure it to look first at /etc/hosts and use the DNS only if
> the address cannot be resolved there? I assume it doesn't use
> /etc/host.conf, because that already has:
>
> order hosts,bind
> multi on
Well, with smail when this happens it's because smail is looking for
MX DNS records, not A DNS records; to get smail to use the hosts file
you need to tell it to use the gethostbyname router for certain
locations (you do this by having a gethostbyname router with the
"required" attribute before your other routers).
I suspect that sendmail is doing the same thing - that is, looking for
MX DNS records, which means bypassing the hosts file. You need to
somehow tell sendmail to just use gethosbyname() instead of DNS stuff;
maybe there's a way to have sendmail look for address (A) DNS records,
which should amount to the same thing as using gethostbyname().
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