Stephen, I have a couple of idea's that you may like to try, if you haven't already 1. I know this may be obvious (and you may have already done so), but is there any entries in the ISA logs that may point to the issue at hand or the event viewer 2. You haven't mentioned what type of OS is on the clients, I have placed an answer to another post which talks about MTU size on Win9x clients, you could possibly use this in conjunction with looking at the Winsock issue. Anyway here is the link http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q297774&; (there is a link for the download on the page) 3. You haven't mentioned any of the settings in the setup of the email (without giving away too many trade secrets!!). I had two email accounts on the one PC in my setup at home (similiar to yours), I had problems with one of the accounts and authentication, although it did not give that indication at first. I ended up having to place the user name in front of the mail server ie. blah/mail.blah.com.au 4. You could set up a packet sniffer on the PC, start it just before you start the send receive process and see if there are any indications from there Just some rambling thoughts that may help, and of course I would be interested to know once you solved it how you did it. Regards Colin Amos -----Original Message----- From: Stephen Stack [mailto:stacky@xxxxxxxxxx] Sent: Wednesday, 27 February 2002 5:39 AM To: [ISAserver.org Discussion List] Subject: [isalist] Interesting One!!! Re: Internet Mail http://www.ISAserver.org HI, I am having a problem getting a client on my network to connect to an internet mail server. The situation is like this. SBS running ISA. 3 clients using the server as a file and internet server. The company has it's own domain name. 2 of the three clients have no difficulties connecting to the internet mail server for their mail. But the last just won't connect to the mail server. I have tried A new pc, A fresh install of windows and a reinstall of ISA. The Client has internet connectivity via ISA. I have tried a differnet email address (ie My own), this will not connect either. The email address in question will work on the other clients. I am using Outlook express 5. I tried upgrading to 6. But the same prob occurred. I have tried the MS kb to no avail on any fixes, I have seen possibly one solution on this site regarding Winsock which I may try tommorow but I am not convinced this will work. It is not a network prob as the other amchines are working fine on the same network point. Please help!!!!! I am stumped cheers Stephen ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tori65@xxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')