Re: Reverse IP lookups

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Author: Philip Hazel
Date:  
To: Mark Baker
CC: exim-users
Subject: Re: Reverse IP lookups
On Tue, 9 Sep 1997, Mark Baker wrote:

> On Tue, 9 Sep 1997, Philip Hazel wrote:
>
> > 3. If there hasn't been a reverse lookup, or the lookup failed, then
> > it will look like
> >
> >    helo.name? [ip.address]

>
> Another possibility would be something like
>
>    unknown (helo.name) [ip.address]

>
> As the helo.name is normally in brackets when it appears at all, I think
> it is potentially confusing for it not to be here.


At this site, we only do reverse lookups for local machines. I really
don't want our log files to get even bigger by the addition of lots of
copies of the string "unknown". That's why I went for the minimalist
notation. Perhaps putting the ? first would be better?

?helo.name [ip.address]

Then in all forms, if there is a non-? alphameric character first, it is
known to be verified.


-- 
Philip Hazel                   University Computing Service,
ph10@???             New Museums Site, Cambridge CB2 3QG,
P.Hazel@???          England.  Phone: +44 1223 334714



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