Rusty Sand wrote:
> I'm trying to get Exim to send all mail to unknown $local_part to an
> internal mail server using driver=smtp, but unknowns just sit in the
> queue. I set this up as per FAQ question Q0403. The spec says
> the address is looked up in the DNS. Does this imply that it only
> checks with the DNS server & doesn't check /etc/hosts ? I don't
> run DNS here, I have all my internal machines listed in /etc/hosts .
> Is this more than likely my problem?
Maybe, you have to set gethostbyname = true in the smtp transport? That
will make it use /etc/hosts as well, I think, though I assume `hosts'
would have to be before `bind' in /etc/resolv.conf to avoid checking
DNS first. (but then I'm hardly an expert on what gethostbyname() does,
so I may well be talking rubbish.)
Although it seems that gethostbyname will never be used for MX records, so
you may have to create a domainlist router before the lookuphost one, and
then gethostbyname can be used to find the address of the remote machine.
central_host:
driver = domainlist
route_list = "remotemachine remotemachine byname"
Which would direct all mail for remotemachine to remotemachine but
avoiding any MX lookup. Assuming remotemachine is listed in /etc/hosts,
and gethostbyname is set on the smtp transport, this should work.
The final alternative is to use an IP literal on the smartuser (see
below):
new_address = "someone@???"
This way, you won't need any host name lookup of any sort.
> What I really want to do is have all unknowns sent to a single
> mailbox on the mail machine, but I figured this was a start. That if I
> figured it out, I could modify it to eventually get what I want.
Surely all you need is a smartuser director?
unknown_mail:
driver = smartuser
new_address = "someone@remotemachine"
I think that's all you need on the director, I may well have missed
something though.
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