This is my only hint that the problem might be related to reverse DNS:
http://www.mail-archive.com/[email protected]/msg03155.html
Now I'm thinking maybe I need to set a port forwarding for port 53
TCP/UDP on the ADSL router...
I.
On 11.04.2010 21:33, Istvan Köpe wrote:
caching-nameserver is installed and it works.
The resolv.conf is:
nameserver 127.0.0.1
The domain names are resolved.
How can I know if spamdyke is installed, because I didn't install it?
I.
On 11.04.2010 20:14, Eric Shubert wrote:
Jake Vickers wrote:
On 04/11/2010 04:33 AM, Istvan Köpe wrote:
Hello,
Yesterday I installed a fresh Qmail Toaster box on Centos 5.4
according to wiki.
The box works fine, but the SMTP is very slow. You have to wait
about 30sec to send a blank message, no matter if you connect from
LAN or from the internet.
I have the same response if I telnet on port 25. Even if I telnet
127.0.0.1 25
I setup bind as caching-nameserver, no change. I tried with djbdns,
no change.
The server is behind an ADSL router with ports 22, 25 and 80
forwarded.
I also tried putting the server in DMZ, no change.
I out of ideas. I don't know where to look for the problem.
Please give me a clue.
Slow connects are usually do due to DNS lookups. You may have a RBL
that is taking a long time to respond (or is timing out) that is
causing the delay.
If this started after installing Spamdyke, remove it until you can
determine what the issue actually is.
I'll second that.
What's in your /etc/resolv.conf file?
Do you have caching-nameserver package installed?
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