New Cpanel/whm on centos email sending problems


Oct 15, 2012
cPanel Access Level
Root Administrator
Hello, we recently made a centos server with a WHM/Cpanel install , we have about 30 domains hosted on the machine and it works just fine ...except for one minor issue(minor but its getting on our clients nerves) ...when sending emails through an email client it hangs a bit on "connected to smtp server" untill it actually starts sending the email( a bit means a max of 15-20 sec)... i have searched the forums far and wide i'm not that experienced when it comes to linux email servers, can anyone point me in the right direction?