I try tackling the light stuff -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Wednesday, May 14, 2003 9:11 PM To: [ISAserver.org Discussion List] Subject: [isalist] Re: Off-topic : Access from Workstation using Outlook Express http://www.ISAserver.org Hi David, Nice analysis! Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: David V. Dellanno [mailto:ddellanno@xxxxxxxxxx] Sent: Tuesday, May 13, 2003 5:34 AM To: [ISAserver.org Discussion List] Subject: [isalist] Re: Off-topic : Access from Workstation using Outlook Express http://www.ISAserver.org I'll try to take a stab at this one. First, I would leave the default configurations of the Firewall Client Properties alone since Microsoft design this product to support Outlook and Outlook Express right out of the box. Second, you made a statement that both incoming and outgoing mail were A.O.K, internet O.K. and nothing was wrong with your internal network. This will help since things have been working in the original state, you want to minimize changes to your network as much as possible. I recommend not to perform ad-hoc changes to your network if you haven't yet isolated your problem. Never assume it is your ISA box! there are many factors to make a simple mail service to work. Then after an hour of successful running time you mention that your internet connection is intermittent - here is were I need you to verify some essential services that should be running so you can successfully send and receive mail. Connectivity - verify that you have internet connectivity - by pinging a known public ip address (example: ping 18.104.22.168) In this case (ping smtp.eastern.com.ph) on your computer behind the ISA, if you do not receive a response behind your firewall, try attempting to perform the ping command at the ISA box. If you still don't receive a response you have two things to check, first - verify that you router that connects to your ISP is powered on or reset the power to it. If that does not resolve your internet connectivity then you need to call support to your ISP. Name Resolution - Next verification is to make sure you can resolve FQDN from your internal network - by using nslookup utility (example: nslookup www.ibm.com) In this case (nslookup smtp.eastern.com.ph and nslookup pop.mydestiny.net. if you do not can not resolve the FQDN to an IP address then you need to ensure that your ISA's protocol and site/content rules are configure correctly and your internal DNS services (forwarding DNS) has been restarted or has been started. Firewall Client - You should have installed ISA's Firewall Client on your client pcs that will be using internet email (fat client). Since you are required to create a constant session to your email server this is needed. To verify that you can connect to your email server use the telnet commend (telnet smtp.eastern.com.ph 25 and telnet pop.mydestiny.net 143) You should be able to connect to both. If everything here is working then you have concluded that ISA is not your problem. Mail Configuration - If you are using and external mail service from an third-party vendor, I have notice that you have to make sure that you follow their email configuration process. Some require you to configure your outlook or outlook express to authenticate outgoing email. This is up to you to follow-up on their configuration and if they make any changes to their process that might leave your entire business not working. I recommend to call them for support and since you have verified the essential of your network and concluded that it is not your problem behind your firewall, this might be there problem. I hope this helps in someway and hope your job is still intact! 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