Re: [exim] Help Please Dnslookup and Host_lookup

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Author: Fred Viles
Date:  
To: exim-users
Subject: Re: [exim] Help Please Dnslookup and Host_lookup
On 12 May 2005 at 23:42, ppp2005@??? wrote about
    "[exim] Help Please  Dnslookup and H":


| I want to disable host_lookup and Dnslookup, but, I simple comment and
| don't work. After first test I completely delete the Host_Lookup = *
| and DNSLookup router from CONFIGURE file, restart Exim, but don't
| works... I don't know what is happening....


host_lookup can be used to cause *additional* lookups, but there are
many other reasons for exim to look up a hostname for the IP address.
See the description of $sender_host_name for a discussion.

Do you reference $sender_host_name anywhere? Do you have any hosts=
conditions with names in the hostlist? Do you use helo_verify_hosts
or helo_try_verify_hosts? Did you set helo_lookup_domains empty (the
default causes lookups when the connecting client HELO's with your
hostname or IP address)?

| The messagens from Dnslookup continues appear in log:
|
| 2005-05-12 23:37:00 no host name found for IP address 219.251.190.82
| 2005-05-12 23:37:00 no host name found for IP address 200.250.218.117


Those are from hostname lookups, nothing to do with the dnslookup
router.

- Fred