Re: [Exim] hostname lookups fail - solved!

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Szerző: Roman Milner
Dátum:  
Címzett: Philip Hazel
CC: exim-users
Tárgy: Re: [Exim] hostname lookups fail - solved!
Well, I changed the permisions on /etc/resolv.conf (the exim user
couldn't read the file - blush :)

Then it took me a while to figure out that exim was smart enough to
remember that it couldn't resolve pointone.com. I cleaned the queue
and everything works.

Thanks,
^Roman

>>>>> "PH" == Philip Hazel <ph10@???> writes:


    PH> On 10 Jul 2000, Roman Milner wrote:
    >> Whenever I'm sending a mail with exim I get " ==
    >> rmilner@??? R=lookuphost defer (-1): host lookup did
    >> not complete" - I get this no matter what domain I send to.
    >> (Full details with -d9 are below.)
    >> 
    >> So, I turned on query logging on the DNS and exim is not
    >> sending any query to the DNS.  Calling gethostbyname() by hand
    >> works, but setting gethostbyname = true in my lookuphost router
    >> doesn't help.  The nameserver is able to resolv this host fine.


    PH> Not true. Exim is trying to look up an MX record in the DNS.


    >> Below I have output for an nslookup on the domain I'm sending
    >> to and from exim -d9 -M.  Thanks in advance.


    PH> What do you get from an nslookup that explicitly looks for MX
    PH> records?


    >> routing rmilner@???, domain pointone.com lookuphost
    >> router called for rmilner@??? dns lookup: route_domain
    >> = pointone.com DNS lookup of pointone.com (MX) gave TRY_AGAIN


    PH> See? Here Exim is trying to look up an MX record, and the
    PH> resolver is giving TRY_AGAIN as the result.


    PH> Why this should happen is mysterious. Exim just calls the
    PH> resolver in what I believe is a pretty standard way. If you
    PH> run with -d11 instead of -d9 it will call the resolver with
    PH> debugging turned on, so you can see the DNS queries is
    PH> uses. This may give us a clue as to what is going on.


    PH> My version of Exim can resolve pointone.com just fine.


    PH> -- Philip Hazel University of Cambridge Computing Service,
    PH> ph10@??? Cambridge, England. Phone: +44 1223 334714.



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