The connection to the Microsoft Exchange Server is Unavailable

[Neal]

Hi All, I'm a trying to set up Exchange Server 2003, but every time my only
client machine tries to connect using Outlook XP it hangs and then displays
"The connection to the Microsoft Exchange Server is Unavailable". If I turn
off the Windows Firewall on the server it connects fine. So I'm figuring I
need to open some more ports on the firewall, but I don't no which ones to
open. Here's the current list

C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\ntfrs.exe
C:\WINDOWS\system32\scshost.exe
C:\Program Files\Exchsrvr\bin\emsmta.exe
File and Printer Sharing
C:\Program Files\Exchsrvr\bin\mad.exe
Port 110 TCP
Port 123 UDP
Port 135 TCP
Port 137 TCP
Port 143 TCP
Port 25 TCP
Port 25 UDP
Port 3268 TCP
Port 3269 TCP
Port 389 TCP
Port 389 UDP
Port 42424 TCP
Port 464 TCP
Port 464 UDP
Port 53 TCP
Port 53 UDP
Port 636 TCP
Port 67 UDP
Port 80 TCP
Port 8098 TCP
Port 8099 TCP
Port 88 TCP
Port 88 UDP
Remote Desktop
C:\Program Files\Exchsrvr\bin\srsmain.exe
C:\Program Files\Exchsrvr\bin\store.exe

Many Thanks
Neal

[Meinolf Weber]

Hello Neal,

Check out this ones:
http://support.microsoft.com/kb/832017

http://www.petri.co.il/ports_used_by_exchange.htm

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.

> Hi All, I'm a trying to set up Exchange Server 2003, but every time my
> only client machine tries to connect using Outlook XP it hangs and
> then displays "The connection to the Microsoft Exchange Server is
> Unavailable". If I turn off the Windows Firewall on the server it
> connects fine. So I'm figuring I need to open some more ports on the
> firewall, but I don't no which ones to open. Here's the current list
>
> C:\WINDOWS\system32\dllhost.exe
> C:\WINDOWS\system32\lsass.exe
> C:\WINDOWS\system32\ntfrs.exe
> C:\WINDOWS\system32\scshost.exe
> C:\Program Files\Exchsrvr\bin\emsmta.exe
> File and Printer Sharing
> C:\Program Files\Exchsrvr\bin\mad.exe
> Port 110 TCP
> Port 123 UDP
> Port 135 TCP
> Port 137 TCP
> Port 143 TCP
> Port 25 TCP
> Port 25 UDP
> Port 3268 TCP
> Port 3269 TCP
> Port 389 TCP
> Port 389 UDP
> Port 42424 TCP
> Port 464 TCP
> Port 464 UDP
> Port 53 TCP
> Port 53 UDP
> Port 636 TCP
> Port 67 UDP
> Port 80 TCP
> Port 8098 TCP
> Port 8099 TCP
> Port 88 TCP
> Port 88 UDP
> Remote Desktop
> C:\Program Files\Exchsrvr\bin\srsmain.exe
> C:\Program Files\Exchsrvr\bin\store.exe
> Many Thanks
> Neal

[Lanwench [MVP - Exchange]]

Neal <nospam@nospam.com> wrote:
> Hi All, I'm a trying to set up Exchange Server 2003, but every time
> my only client machine tries to connect using Outlook XP it hangs and
> then displays "The connection to the Microsoft Exchange Server is
> Unavailable". If I turn off the Windows Firewall on the server it
> connects fine.

Hmmm - what's the reason you're using the Windows Firewall on your server?
Do you have a good firewall appliance between your network & the internet?
Don't rely on Windows for that.

So I'm figuring I need to open some more ports on the
> firewall, but I don't no which ones to open. Here's the current list
>
<snip>

You might have more luck posting in microsoft.public.exchange.admin. Mention
whether your Exchange server is a member server or DC.