Re: cant conect to dynamic host-URL

[root(at)sydney ~]# nslookup adocom.dyndns.org
Server: 80.175.29.73
Address: 80.175.29.73#53

Non-authoritative answer:
Name: adocom.dyndns.org
Address: 84.191.116.130

[root(at)sydney ~]# telnet adocom.dyndns.org 5432
Trying 84.191.116.130...
Connected to adocom.dyndns.org.
Escape character is '^]'.

Connects fine from my box. How about firewalls? We had a weird case at
work a while back where a router somewhere along the line was blocking
all connections until it was ping'd - then after it received a ping,
it'd keep the connection open for 20 minutes or so, then start blocking
again. Turned out to be faulty!

One thing I would check is the domain name lookup. Make sure your DNS
servers are properly configured and respond timely (within 2 seconds.)
Repeatedly do a "dig adocom.dyndns.org A" from your client for a minute
and see if any time out and/or fail.

Andy.

Brew wrote:
> Dirk......
>
> Hi there, ive got a dynamic URL like myname.dyndns.org
> <http://myname.dyndns.org> which links to my
> server
> where my postgres database runs. The Problem is that the Connection
> fails with error:
> "Warning: pg_connect(): Unable to connect to PostgreSQL server:
> unknown
> host name: adocom.dyndns.org <http://adocom.dyndns.org>"
>
> Now, if i ping my dynamic address and use the resulting IP for the
> Connection all works fine.
>
>
> Are you running php on one machine and postgresql on a different machine?
>
> If so, maybe the dynamic address redirection service doesn't handle
> port 5432. Web servers typically use port 80.
>
> I don't know where my i did something wrong, i use an Java-Applet which
>
> connects also with the dynamic Address and works fine too. :(
>
>
> Does it connect with postgresql, or something else on the machine
> using a different port?
>
> I think you can use telnet (or ssh?) to manually connect to any port
> number of a host and see how (and if) the machine responds and get a
> better idea of what's going on.
>
> brew
>
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>
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