I have a client that have a relatively small network with 1 exchange server, and 5 workstations. 2 of the workstations have Outlook 2007 and for some reason, they're not getting emails until they manually hit the "Send/Receive" button in Outlook. I've created a Send/Receive group in Outlook and set the interval to 10 minutes but it seems odd to have to wait 10 minutes to get your emails. Can anyone explain how Outlook interacts with Exchange and how the mail delivery process works? Does Exchange push the email to the Outlook client when a message is received or does Outlook ask Exchange at a certain interval? I guess what I'm looking for is to know whether this is a client (outlook) problem or a server problem and how to fix it.

Most of the time this is a client side issue - specifically a firewall. Outlook sits there and does nothing to query the mailbox, unless you change folder or do something that requires a server side refresh. Exchange sends a packet to Outlook to tell it that something has changed (new email) and then Outlook will go and look to see what the change is. If a firewall is blocking the packet then Outlook doesn't know, until you press send/receive or do something else that requires a server connection. Exchange doesn't push the entire email, just the packet. You shouldn't need to press Send/Receive or configure a Send/Receive group in a correctly functioning network - I don't think I have pressed send/receive in about eight years. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I don't believe there there is a firewall between the server and the client as Windows Firewall is disabled via GP. What port does Exchange use to notify the outlook client? I haven't had to press Send/Receive either...and neither does the other clients (pc) in the client's network..just these 2 PCs. I deleted the profile and create a new one, and once the new one was setup, the problem went away. However, once I added additional mailboxes to the profile, the problem came back. I'm guess this problem has something to do with the OST file and the size of the mailbox? How does Outlook work when it's in cache mode? From what I understand, when you're in cache mode, you're viewing the OST file and not Exchange itself, is that right? If the profile has 4 mailboxes, with about 4000 message each, would that cause the delay that the client's experiencing? If so, how come it's only affecting 2 users?

On Sun, 6 Feb 2011 02:50:21 +0000, pham0329 wrote: >I don't believe there there is a firewall between the server and the client as Windows Firewall is disabled via GP. What port does Exchange use to notify the outlook client? You're running Exchange 2010, so UDP notification is gone (at least for now). That's nicely buried here: http://technet.microsoft.com/en-us/library/ee332317.aspx "In addition to the RPC encryption requirement, UDP notification support was removed from Exchange 2010." Outlook 2007, in cached mode, will use asynchronous rpc to find new e-mail. >I haven't had to press Send/Receive either...and neither does the other clients (pc) in the client's network..just these 2 PCs. I deleted the profile and create a new one, and once the new one was setup, the problem went away. Boy, how many times have we heard *that*?! >However, once I added additional mailboxes to the profile, the problem came back. I'm guess this problem has something to do with the OST file and the size of the mailbox? I don't think so. Only the 'primary' mailbox is using the OST. The others are connected with synchronous rpc (i.e. on-line mode). >How does Outlook work when it's in cache mode? From what I understand, when you're in cache mode, you're viewing the OST file and not Exchange itself, is that right? If the profile has 4 mailboxes, with about 4000 message each, would that cause the delay that the client's experiencing? If so, how come it's only affecting 2 users? I don't know if you checked the RPC Encryption settings on those two O2K7 clients, but they should be using RPC encryption (that's the default) unless you've turned off that requirement with the set-rpcclientaccess cmdlet. When they have this problem, have you verified that they aren't working in "off-line" mode? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

"When they have this problem, have you verified that they aren't working in "off-line" mode?" Yes. Both clients are online as indicated by the "Connected to Microsoft Exchange" status in the status bar. I even viewed the connection status in Outlook at the latency between Outlook and Exchange is normal. I don't think the encryption settings were changed but I'll double check tomorrow...I'll probably try to disable cache mode also to see if that will help.

It seems outlook is unable to synchronize with the exchange server. What about accessing mailbox via OWA on the two workstations? Rich Matheisen has given many good suggestions. Here is a detail configuration for RPC encryption: http://bemis/243/Pages/2252196_en-gb.aspx I still have some other suggestion. 1. What about starting outlook in safe mode, Have any third part add-in be installed on the two workstations? 2.Time zones may cause the issue.

1. Have not started in Safe-mode but there's no add-in installed. 2. I also thought maybe the time settings were incorrect but they are. 3. When accessing OWA, the email arrives like it should.

Can you try re-creating the profiles of the users on these two workstations.

Better yet, try on different workstations. Try to isolate if it's just these two machines, there's always change that some Outlook profile related registry keys are corrupt. Re-creating the profile sometimes does not help unless you clean the keys. James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

It seems outlook is unable to synchronize with the exchange server. What about accessing mailbox via OWA on the two workstations? Rich Matheisen has given many good suggestions. Here is a detail configuration for RPC encryption: http://bemis/243/Pages/2252196_en-gb.aspx I still have some other suggestion. 1. What about starting outlook in safe mode, Have any third part add-in be installed on the two workstations? 2.Time zones may cause the issue.

I have created new profiles and that took care of the problem...until I added additional mailboxes to the profile. Once the additional mailboxes were added, the delay appeared again. Without the additional mailboxes, emails sent to the user are delivered like it should.

Hi, I think the size of the additional mailbox may be too large to synchronize . I suggest you do the following: 1) In Outlook, drag all mail from the additional mailboxes into a respective public folder for each. You can then configure permissions to control who can access the data in each public folder using the methods in technet article http://technet.microsoft.com/en-us/library/aa996122(EXCHG.65).aspx. 2) Leave the calendar data in each additional mailbox. This will prevent the lose of the meeting organizer and recurrence settings if the items were to be moved to public folders. If problem still exist, Could you please install the hotfix package Outlook-x-none.msp You can download it via: http://support.microsoft.com/?id=977032

Better late then never, but try suggestion posted today from someone with same issue and able to resolve. In Outlook 2010, click Account Settings on the Tools menu. On the Email tab, click to select the Exchange account, and then click Change. Click More Settings. On the Advanced tab, click to clear the Download Shared Folders (excludes mail folders) check box, and then click OK. http://social.technet.microsoft.com/Forums/en/exchangesvrclients/thread/c27803d9-cf30-44d6-8f53-ac4f30cdab84James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

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