Hi All,
I have inherited a box that is running Slackware with QMail. Qmail is setup
to use tcpserver and rblsmtpd. The box is masquerading an internal address
as well.
If I connect to the internal interface (192.168.1) (1st ethernet card) via
telnet on port 110 I get an immediate response (OK). If I connect to the
external interface (2nd ethernet card) I get a long delay (40 sec +) before
I get the OK prompt. If I connect from a machine that is one hop away on the
internal network to the 192.168.1 ethernet card I get the 40 sec + delay).
Once the connection happens the system is very quick. The problem I am
having is that some mail clients are timing out when connection to the pop
service.
Due to the fact I inherited the box recently I am not aware of patch levels
but the versions installed on the box are as follows.
Qmail 1.03
rblsmtpd 0.70
tcpserver 0.84
daemontools 0.70
I think it may be some sort of network lookup that is being done but I don't
really know enough about the box to know where to look.
The box is not under resourced at all as it has more memory that it needs
and the processors never go over 10%.
Any ideas or pointers at reading material would be appreciated.
Cheers
Duncan
