Their DNS server is on ISA machine which is also a domain controller. so their DNS is root DNS where forwarder is disabled. -----Original Message----- From: Gunawan Sent: Wed 2/13/2002 11:50 AM To: [ISAserver.org Discussion List] Cc: Subject: [isalist] Re: Exchange Behind ISA http://www.ISAserver.org Maybe the problem lies on your DNS system which cannot resolve outbound email domain. Have you activated forwarder in you internal DNS which your exchange server refer to? Gunawan ----- Original Message ----- From: "Shamshad Ahmad" <sahmad@xxxxxxxxx> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> Sent: Wednesday, February 13, 2002 1:13 PM Subject: [isalist] Exchange Behind ISA > http://www.ISAserver.org > > > HI List > One of my clients is having problem sending mails to external smtp address from exchange which is behind ISA server. > They have 10 computers network. configured with ISA and Exchange. Exchange is behind ISA. They user external SMTP server as smart host to send mails. they are using dialup internet connection on isa server computer. POP and SMtp ports are open in ISA server. any body in network can send ad recieve mails thru outlook which is not Exchange client. > but the problem is when exchange outlook client wants to send mails thru exchange. mails do not go. they are qued in exchange. > i tried to telnet external smtp from exchange machine. it connected. > and if i use dial up on exchange machine. mails start gooing. > what is the problem. > > Can anybody help me. > > Reg > Shamshad > > > > > > > > > ------------------------------------------------------ > You are currently subscribed to this ISAserver.org Discussion List as: gunawan@xxxxxxxxxxxxxxxxxxxx > To unsubscribe send a blank email to leave-isalist-244583I@xxxxxxxxxxxxx > ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: sahmad@xxxxxxxxx To unsubscribe send a blank email to leave-isalist-244583I@xxxxxxxxxxxxx