Re: Off-topic : Access from Workstation using Outlook Express
- From: "David V. Dellanno" <ddellanno@xxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 14 May 2003 21:15:35 -0400
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
198.6.1.98) 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!
Ciao for now!
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