Ok. We are having the exact same problem and I've been trying to figure it
out, too. We have a very similar setup. OWA5.5 SP4 running on W2K SP2 and
separate Exchange 5.5 SP4 servers running also on W2K SP2. So, it's not a
W2K to NT4.0 issue. Here's what we've discovered so far:
1. We have noticed that this ALWAYS happens after network outages/hiccups.
For example, if the switch that is connected to the backbone where the
Exchange Servers run is rebooted, all OWA servers start exhibiting this
behavior.
2. IIS and ASP engine still work when this problem happens. I wrote some
test ASPs and put them in the same vroot and they function just fine.
3. Restarting the WWW service clears the error.
4. The problem started happening only after we deployed OWA5.5 on W2K.
Never an issue with OWA5.5 on NT4.0.
5. The "cannot connect to Exchange Server xxxxxxx" error is for the initial
connection of OWA (the server name you provide when you run OWA setup), not
necessarily the server that hosts the mailbox.
6. Found the following Q articles on this topic, but haven't had a chance to
go through them yet: Q176240, Q247085, Q178511. I doubt it's the last one
since that would cause a permanent problem, not an intermittent one.
7. While the problem is happening, name resolution works fine both ways
between the OWA and Exchange servers.
Serdar Soysal
Technical Specialist
Electronic Messaging Group
Kmart Corporation
-----Original Message-----
From: Mahesh Bharatsingh [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 04, 2001 3:35 AM
To: Exchange Discussions
Subject: RE: Outlook web access
Nothing changed.
I think that maybe there are some sort of connections or sessions that owa
opens and never closes but i can't find any.
-----Original Message-----
From: Drewski [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 03, 2001 8:00 PM
To: Exchange Discussions
Subject: RE: Outlook web access
ok, now we're gettin' somewhere. This makes me think that it isn't
individual users, but the OWA server itself. Has anything changed? Did the
Exchange server change?
Drew (MOS)
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I am darn unsatisfied to be killed in this way.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Mahesh
Bharatsingh
Sent: Monday, September 03, 2001 9:24 AM
To: Exchange Discussions
Subject: RE: Outlook web access
Yes, if clients can't connect to owa, because the owa server Failed to
connect to the mailserver, we are able to ping the server.
We also can browse the default website, IIS keeps on running. The problem
occurs when owa tries to open a mailbox.
Before owa tries to open a mailbox, the user must be validated by a PDC or
BDC. The same credentials are used to open a mailbox.
When the owa server can't connect ot the mailserver, the users are still
able to be validated, there are no problems there. After validation, the owa
service tries to connect to a exchange server and can't.
Mahesh
-----Original Message-----
From: Drewski [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 03, 2001 4:17 PM
To: Exchange Discussions
Subject: RE: Outlook web access
maybe, although I've not heard of DNS errors that "get worse".
When Exchange locks, can you still ping the actual server?
Drew (MOS)
********************************
KWAR2001 website: www.schoolofdefence.org/kwar.html
Read my Column on OUTLOOKEXCHANGE.COM:
http://www.outlookexchange.com/articles/drewnicholson/default.asp
Pics of Max are BACK! http://www.drewncapris.net
********************************
He was a wise man who invented beer. --Plato
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Mahesh
Bharatsingh
Sent: Monday, September 03, 2001 9:14 AM
To: Exchange Discussions
Subject: RE: Outlook web access
Not at all.
The processor is being used for about 10% at the most and with memory no
problems also.
I have a DNS server in the network.
Could there be a problem with DNS?
Mahesh
-----Original Message-----
From: Drewski [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 03, 2001 3:41 PM
To: Exchange Discussions
Subject: RE: Outlook web access
Do you have DNS or WINS running at all? it sounds to me like that's a
memory leak or something -- does the processor or RAM become completely used
up?
Drew (MOS)
********************************
KWAR2001 website: www.schoolofdefence.org/kwar.html
Read my Column on OUTLOOKEXCHANGE.COM:
http://www.outlookexchange.com/articles/drewnicholson/default.asp
Pics of Max are BACK! http://www.drewncapris.net
********************************
"Any technology distinguishable from magic is insufficiently advanced."
Probably not Arthur C. Clarke
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Mahesh
Bharatsingh
Sent: Monday, September 03, 2001 5:15 AM
To: Exchange Discussions
Subject: RE: Outlook web access
Hello
After a few days it's impossible to connect to it, the only thing i can do
is rebooting the server.
We have no DNS or WINS running on the server and there is a seperate
exchange server which is connected to a lot exchange servers.
We've a isa-server in our DMZ which functions as a portal to the owa server.
The owa-server is setup with W2K-advanced server (iis 5.0) and owa 5.5, SP4.
All of our exchange servers are WinNT 4.0 and Exchange 5.5 SP4.
Could there be a problem with connectivity between W2K and WinNT 4.0?
-----Original Message-----
From: Drewski [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 31, 2001 11:12 PM
To: Exchange Discussions
Subject: RE: Outlook web access
Define "really hard". Is is the same interval every time? How do you get
it back to letting you connect -- rebooting?
Are you running DNS? WINS? LMHOSTS? How is the OWA server set up? Is
there a seperate exchange server?
What's the versions? They are the same version, right?
Paper or plastic? Demoblican or Republicrat? Lefty or rightly?
Drew (MOS)
********************************
KWAR2001 website: www.schoolofdefence.org/kwar.html
Read my Column on OUTLOOKEXCHANGE.COM:
http://www.outlookexchange.com/articles/drewnicholson/default.asp
Pics of Max are BACK! http://www.drewncapris.net
********************************
On the other hand, you have different fingers.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Mahesh
Bharatsingh
Sent: Friday, August 31, 2001 8:54 AM
To: Exchange Discussions
Subject: Outlook web access
Hello
I have an owa server running on my network. It runs just fine for an few
days, after that it becomes really hard to connect to it.
The message my clients receive is: Failed to connect to the microsoft
exchange server <servername>.
I have tried everything to prevent this from happening, but failed at every
attempt.
If anyone has suggestions or ideas, they're welcome.
Thanks in advance,
Mahesh Bharatsingh
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