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Slow OWA - 26.Feb.2002 10:37:00 PM

MysticMike

Posts: 19
Joined: 12.Feb.2002
From: CA
Status: offline

We just moved our mail from an exchange 5.5 to exchange 2000 server, both behind the ISA server. Everything is working okay but OWA from outside the network is SUPER slow. After it takes forever to get the .gifs on the side frame and top, it then sits there with Loading... finally it shows the mail. Takes a long time to open the messages too. OWA with 5.5 was WAY faster than this new version. Anyone experience this, what can I do to try to speed it up?

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RE: Slow OWA - 27.Feb.2002 3:07:00 PM

Neo

Posts: 12
Joined: 2.Feb.2002
Status: offline

Remember that Exchange 2000 is asking more from your server then 5.5 does.

What is your server configuration? Maybe you should upgrade it.

(in reply to MysticMike)

Post #: 2

RE: Slow OWA - 27.Feb.2002 7:13:00 PM

MysticMike

Posts: 19
Joined: 12.Feb.2002
From: CA
Status: offline

I don't think it's hardware related. It works great inside the network, it's on the outside (the only place we really use it) that OWA is super slow. Exchange 2000 is supposed to be faster than 5.5. The box is a Gateway ALR 7200 (yeah, they're still around) dual 450s, with 768mb. The 5.5 box is dual 300s 500mb, Dell.

Seeing it work great behind ISA, and work so incredibly slow outside of ISA, I think it must be ISA that is slowing it down.

(in reply to MysticMike)

Post #: 3

RE: Slow OWA - 27.Feb.2002 7:15:00 PM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi Mike,

Recheck your DNS infrastructure and make sure it is configured correctly. Are you using DSL by any chance?

Thanks!

Tom

(in reply to MysticMike)

Post #: 4

RE: Slow OWA - 27.Feb.2002 7:28:00 PM

MysticMike

Posts: 19
Joined: 12.Feb.2002
From: CA
Status: offline

Checked DNS, it's set up just like the original mail server. Since I haven't moved everyone over to the new one yet, I've got two MX records pointing to mail. and mail2.(the exchange 2k). It's easy to compare them because they are both still there. The only diff is the MX priority, mail2. is 9, mail. is 10. OWA is through mail2.domainname.com/exchange. It does work, I can get there and reply to messages, etc, but it is really dog slow, almost unusable. We have a full T1. Network performance is fine. This is hanging me up, thanks for any help.

(in reply to MysticMike)

Post #: 5

RE: Slow OWA - 27.Feb.2002 7:30:00 PM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi Mike,

1. How are the Destination Sets configured?

2. Are you running any other web sites on the OWA server (please say no)

Thanks!

Tom

(in reply to MysticMike)

Post #: 6

RE: Slow OWA - 27.Feb.2002 7:39:00 PM

MysticMike

Posts: 19
Joined: 12.Feb.2002
From: CA
Status: offline

Destination set for Mail2:

Name/IpRange path
mail2.domainname.com /public/*
mail2.domainname.com /exchweb/*
mail2.domainname.com /exchange/*

There is only one destination set created for mail2. I thought I followed your tutorial exactly.

The 5.5 OWA destination set:

mail.domainname.com /exchange/*

Of course the 5.5 owa works fine.

OWA is the only website being hosted on the exchange 2000 box. We are hosting a coldfusion website on the 5.5 box and it's still working fine! [Razz]

(in reply to MysticMike)

Post #: 7

RE: Slow OWA - 16.May2002 12:29:00 PM

eladk

Posts: 2
Joined: 28.Apr.2002
Status: offline

Hi

I have the same problem I have Exchange 2000 SP2 server and I did evrithing according to the tutorial and its slow like hell.

Please HELP

(in reply to MysticMike)

Post #: 8

RE: Slow OWA - 17.May2002 3:13:00 PM

AxelG

Posts: 11
Joined: 15.Jun.2001
From: Austria, Europe
Status: offline

Hi! Same problem.
I have a SBS2k and the ISA on another machine. Connection via ADSL (static IP).
I connect to OWA by <external address of my ISA>/exchange and it is HELL slow.
I configured web publishing with the IP address of the exchange server (not the name), so it would not need name resolution and hopefully be faster - no chance.
But when I use VPN to connect it performes really well. So the problem cannot be the connection speed.
Thx for any help!

(in reply to MysticMike)

Post #: 9

RE: Slow OWA - 17.May2002 5:48:00 PM

Abraham

Posts: 166
Joined: 8.Mar.2002
From: Colombia
Status: offline

Hi.

If you use Microsoft Internet Explorer 5 to gain access to Outlook Web Access (OWA) and you experience problems because of a slow Internet connection, proxy settings, or firewall settings, there is not an option available to gain access to OWA by using the OWA code path for earlier version browsers OWA use Webdav as primary code, so if you try to access using IE 6.0 the access is more faster. Try this:

1. IE 6.0 on Client�s
2. Try another Athentication topology
3. Try a Front-End Server pointing to a Back -End
4. Check your Resolution(DNS)(SRV records may help)

Tell me about!

(in reply to MysticMike)

Post #: 10

RE: Slow OWA - 21.May2002 10:45:00 AM

AxelG

Posts: 11
Joined: 15.Jun.2001
From: Austria, Europe
Status: offline

I am working with IE6 on Windows XP at the client which accesses OWA.
Authentication method is basic as in the OWA tutorial, no SSL. Just a listener on Port 80 on the external IP of ISA.
Exchange is running behind ISA on a SBS2k.
Web Access via VPN is fast, only via Web it is terribly slow.

(in reply to MysticMike)

Post #: 11

RE: Slow OWA - 23.May2002 4:37:00 PM

Roberto

Posts: 11
Joined: 23.May2002
Status: offline

Exchange 2000's OWA has always seemed very slow to me over slow Internet connections and I always traced this to its huge size: OWA's home page weights around 350K! But actually never tried it through a VPN. If it feels faster through a VPN, there must be another problem.

(in reply to MysticMike)

Post #: 12

RE: Slow OWA - 24.May2002 10:08:00 AM

Guest

I have the same problem. But it seems to be something about OWA and not it's size. I have some websites hosted on another server and those pages are served quick. Another thing is that if you get an attachemnt in a mail and open it through OWA it loads fast.

Anyone have some solution?

/Jonaz

(in reply to MysticMike)

Post #: 13

RE: Slow OWA - 28.May2003 2:00:00 PM

jvanepps

Posts: 24
Joined: 28.May2003
From: Louisiana
Status: offline

Has anyone got an answer to this question? I get this slow reponse as well. Internally it is super fast, and i have a full T1 for my internet, and my ISA server has 2 xeon processors with 1GB of RAM, so it can't be my server. Something with the publishing? Can someone help me out here?

(in reply to MysticMike)

Post #: 14

RE: Slow OWA - 29.May2003 4:51:00 PM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hey guys,

If speed of loading is the problem, you can fix that by making sure all the machines that connect to the site have a machine certificate assigned by the same CA that assigned the Web site certificate, and then use ONLY that means ONLY, that mean NO NEGOTIATION, use only basic authentication on the OWA directories. You don't need to negotiate any other kind of auth because you're protected by SSL.

HTH,
Tom

(in reply to MysticMike)

Post #: 15