Re: [tpop3d-discuss]virtual hosting: /etc/hosts mapping or inverse name resolution??? please help

[Mike Pinkerton]

At 18:41 +1200 2004/08/17, PhilG wrote:
> Hi All,
>
> I'm hoping someone can help me solve this problem with tpop3d 1.7.3

[snip]

> Note that for this to work, all interfaces on which connections
> are to be accepted must have functioning inverse name resolution; also, in
> this case, tpop3d  will  do  a  name lookup  for  each  incoming
> connection,  which may block in the event of a DNS failure. You  may  wish
> to   create   some  other  mapping  --  perhaps  in /etc/hosts -- to ensure
> that this does not occur.
> [end quote]
>
> So how do I setup the /etc/hosts map? or the inverse name resolution? has
> anyone had this problem?


Phil:

I don't know the specifics of what tpop3d is doing with name 
resolution, but generally to use your hosts file for name resolution, 
you want /etc/hosts to contain a mapping of IP addresses to host 
names and aliases in the following format:

127.0.0.1       localhost.localdomain localhost
IP.ad.dr.ess    host.domain.tld alias

Alias is optional -- you don't need it if the host doesn't have any 
aliases (generally equivalent to DNS CNAME records).  If you have 
multiple domains on a single IP address, you should have multiple 
lines with the same IP address followed by the multiple 
host.domain.tld names.

I don't know if tpop3d's default behavior is to consult /etc/hosts 
before DNS, but in case it uses the system default, you should make 
sure that /etc/hostconf contains the following order:

order hosts,bind

If you are using something other than BIND for DNS, that line may 
need to be adjusted accordingly.

I have had other problems with auth-flatfile, specifically with the 
hashing of passwords, that I have yet to sort out.  I hope you meet 
with more success than I have done so far.

--
Mike Pinkerton