delays on telnet localhost 25

[Paulo Correia]

Hi, 

I'm having some problems with a qmail instalation. It was working fine on some 
tests, but now we have a delay of about 5 seconds or more when connecting to 
the smtp port.
This happens from localhost and other machines.
I'm using tcpserver without reverse dns loopkup, 20 max smtp concurrency and 
blocking RELAY (and some IPs, not 127.0.0.1) throght tcpserver.
The box is a Sun Solaris 1700 MB memory and 2 450 MHz CPUs
Directions would be much apreciated!

Thanks in advance,
Paulo Correia