Hallo I'm a administrator of SBS server 2000. I have performance troubles with SMTP mail conector, becouse if any mail greater than 6MB show in queue to release very strong dicrease performance of proxy server to the internet. Server has 2 network card (internal and external) and working ISA and is connectet to the 1Mbit speed frame relay line. When this big mail is released the normal situation came back.What I should do.