iRule redirect based on port

All,

 

 

I am trying to redirect to two different hosts base on port number. One server is hosting SMTP and the other POP3. The following rule seems valid but dosen't seem to work. Any suggestions?

 

 

when CLIENT_DATA {

 

if { [TCP::remote_port] contains "110" } {

 

pool POP3

 

}

 

elseif { [TCP::remote_port] contains "25" } {

 

pool SMTP

 

} else {

 

discard}

 

}