Connection Refused

thanks. Im a total newbie. I don't know how to get to the command line. is that a putty sessin type of thing?

are there logs to check?

I don't see how those two commands help me. I'm looking for traffic that may be getting dropped by the F5.

Do you have back end server access? Login to UNIX server n check the port status with above command.

I can open a cli session on the f5 and run the commands. this command, netstat -an | grep “:25 “, give me nothing. however, netstat -an, gives me connected and listening. And netstat -plnt | grep ':80'gives me: netstat -plnt | grep ':80' tcp 0 0 127.0.0.1:80 0.0.0.0:* LISTEN 5996/httpd tcp 0 0 ::ffff:127.0.0.1:8005 :::* LISTEN 10786/java tcp 0 0 ::ffff:127.0.0.1:8009 :::* LISTEN 10786/java

Is there a log that will show me when IP address try's to connect or connects to the f5?

/var/log/ltm

... or you can perform a TCPDUMP.

If you don't see port 25 on the netstat when you are trying to connect via telnet, the server isn't listening on that port.

Also, they are trying to connect to the VIP, so you need to ensure that the VIP application server is listening on said port. I wouldn't let customers telnet into servers but maybe that is just me.

I don't think I presented this right. The user is sending email via telnet to test their app server. the email will go thru the f5 (load balancing) and onto the mail relays. we send and receive 1000's every day so its probably not a port issue. already checked FW. I need to see a log that will show me the traffic from a specific IP. the connection initially gets refused, then works. the email gets delivered.

TCPDUMP on the application server, and another time from the front-end of the BIGIP F5.

how is do I view a qkview file?

From gui,

System > Support > Check box for qkview