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From Dean Gaudet <>
Subject Re: hostname lookups
Date Tue, 01 Jul 1997 06:20:04 GMT
Ok I'll revert the 1.2.1 changes.  The main intention of making the
default off is to prevent new sites from coming online with
hostnamelookups when they don't really need them.  But I guess enough
people start from the .conf-dist files and just edit back in their own
local changes that it'll be an issue.  I always assume people know they
can just use their existing config files. 

It may be possible to add a warning in mod_access during config time that
says "hostname lookups are off, but you've asked for resolution based on


On Tue, 1 Jul 1997, Marc Slemko wrote:

> My vote is turn hostnamelookups back on for 1.2.1, then consider what we
> want to do for 1.3.  There are too many unresolved issues.
> There is a big difference between running a server with hostnamelookups on
> and resolving the names later.  If you process a week's worth of logfiles
> and cache the results, you will do a lot less lookups than if you do them
> when you get the request.  Just as importantly, lookups take time and add
> another serialization to the process.
> On Mon, 30 Jun 1997, Randy Terbush wrote:
> > FTR - I don't view having 'HostnameLookups on' as that big of a 
> > problem. Certainly not big enough to justify the tidal wave of "bug"
> > reports that this will surely generate. 
> > 
> > What is the difference between me running servers with 
> > HostnameLookups on and having a log processor running on the side 
> > resolving an endless stream of requests?
> > 
> > The real problem here is the thousands of sites out there that 
> > can't seem to configure reverse lookups for their clients. If the 
> > address can be resolved, it is in local cache and that is the end 
> > of it. If it can't be resolved, it creates an endless number of 
> > failed attempts everywhere it goes on the net.
> > 
> > If we want to do the net a favor, add the code to refuse serving 
> > clients with addresses that cannot be resolved. That way we shift 
> > the bug reports off to the service providers. :-)
> > 
> > IMHO - This type of change does not belong in 1.2.x
> > 
> > 
> > 
> > 

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