outlook and exchange seems connected, but..

  • Thread starter Thread starter Jiøí Cvrk
  • Start date Start date
J

Jiøí Cvrk

November, 25th,
hello,
we have problem with emails.
Sometimes somebody, often, has problem with emails (I have mentioned such
situations before). Outlook is f.e. on desktop, notices that connected to
our exchange server. But:
no new emails are coming.
What helps? Quit outlook and check, if it can be seen in taskmanager, kill
Outlook process in taskmanager, Outlook remains there, and start Outlook
again.
To simply restart Outlook only helps not.
Can you advice us any better another solution? Thank you for help.
Best regards,
 
You don't mention what version of Outlook you are using, but with older
versions (Outlook 97 thru 2002) a personal firewall could interfere with
receiving new items. The reason why is that the personal firewall (e.g.
Windows Firewall included in XP) will block the UDP network packet from
Exchange to the desktop informing Outlook something is new, come check and
redraw your interface accordingly. This UDP network packet cannot be locked
to any specific port.

/neo

ps - to verify the above, rather than restarting Outlook. The user just has
to switch away from Outlook's Inbox and then back to it.
 
Thank you, we are using Outlook2007, on Windows XP(patched).


neo said:
You don't mention what version of Outlook you are using, but with older
versions (Outlook 97 thru 2002) a personal firewall could interfere with
receiving new items. The reason why is that the personal firewall (e.g.
Windows Firewall included in XP) will block the UDP network packet from
Exchange to the desktop informing Outlook something is new, come check and
redraw your interface accordingly. This UDP network packet cannot be
locked to any specific port.

/neo

ps - to verify the above, rather than restarting Outlook. The user just
has to switch away from Outlook's Inbox and then back to it.
Click to expand...
 
Interesting, Outlook 2003/7 should switch to polling the Exchange server
when the UDP packets don't make it from server to client. Since you
mentioned "connected", I'll assume cached mode is being used. Connecting to
Exchange via RPC/TCP or RPC/HTTPS?

Jiøí Cvrk said:
Thank you, we are using Outlook2007, on Windows XP(patched).
Click to expand...
 
hello,
we have cached mode used and we are connected via RPC/TCP. Should I try to
switch cached mode off?
Thank you very much for replies.
 
Weird and no. Is there anything between server and client that would block
UDP? (Example, if using firewall or ACLs on a router, the direction of flow
is Exchange to client. A firewall rule would read source port ANY to
destination port >=1024.) By the way, don't forget to look at QoS. Usually
UDP is the first to get dropped when the network link gets busy.


Jiøí Cvrk said:
hello,
we have cached mode used and we are connected via RPC/TCP. Should I try
to switch cached mode off?
Thank you very much for replies.

neo said:
Interesting, Outlook 2003/7 should switch to polling the Exchange server
when the UDP packets don't make it from server to client. Since you
mentioned "connected", I'll assume cached mode is being used. Connecting
to Exchange via RPC/TCP or RPC/HTTPS?

Jiøí Cvrk said:
Thank you, we are using Outlook2007, on Windows XP(patched).


"neo [mvp outlook]" <[email protected]> pí¹e v diskusním
pøíspìvku You don't mention what version of Outlook you are using, but with older
versions (Outlook 97 thru 2002) a personal firewall could interfere
with receiving new items. The reason why is that the personal firewall
(e.g. Windows Firewall included in XP) will block the UDP network
packet from Exchange to the desktop informing Outlook something is new,
come check and redraw your interface accordingly. This UDP network
packet cannot be locked to any specific port.

/neo

ps - to verify the above, rather than restarting Outlook. The user
just has to switch away from Outlook's Inbox and then back to it.

November, 25th,
hello,
we have problem with emails.
Sometimes somebody, often, has problem with emails (I have mentioned
such situations before). Outlook is f.e. on desktop, notices that
connected to our exchange server. But:
no new emails are coming.
What helps? Quit outlook and check, if it can be seen in taskmanager,
kill Outlook process in taskmanager, Outlook remains there, and start
Outlook again.
To simply restart Outlook only helps not.
Can you advice us any better another solution? Thank you for help.
Best regards,
Click to expand...
Click to expand...
Click to expand...
 
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