Outlook cache mode check mail interval

[Chris]

We are using Exchange 2003 for mailbox servers. Most of users are using
outlook 2003. Only a few using Outlook 2000. I always thought that Outlook
cache mode (all version) has the default 15 minutes interval to sync (pull)
with mailbox to receive new emails. Send is immediate by default if
connection is available. Is that correct? I spoke with a MS tech support.
He told me that Outlook 2003 acts differently. It has no interval to sync
with mailbox to pull new emails. But he didn't say how Outlook 2003 will get
new emails. Is there a push from server? Is there a MS KB for how cache
mode works?

Thanks.

 

[Roady [MVP]]

It's a combination. The Exchange server notifies Outlook of a server-side
change when the change occurs. Outlook then waits 30 seconds before it
downloads these changes. All additional changes that took place in these 30
seconds are downloaded as well.

As for sending changes from Outlook to Exchange; After every client-side
change Outlook waits 15 seconds before uploading these changes to Exchange.
If another client-side change took place within these 15 seconds the counter
will be reset. Theoretically this could result in an endless reset so a
forced upload will take place 60 seconds after the first change.

You can modify this behavior via group policies if you have a specific need
for your environment. More info can be found in the Office Resource Kit.

 

[Chris]

Roady,
Is this new to Outlook 2003?

It's a combination. The Exchange server notifies Outlook of a server-side
change when the change occurs. Outlook then waits 30 seconds before it
downloads these changes. All additional changes that took place in these 30
seconds are downloaded as well.

As for sending changes from Outlook to Exchange; After every client-side
change Outlook waits 15 seconds before uploading these changes to Exchange.
If another client-side change took place within these 15 seconds the counter
will be reset. Theoretically this could result in an endless reset so a
forced upload will take place 60 seconds after the first change.

You can modify this behavior via group policies if you have a specific need
for your environment. More info can be found in the Office Resource Kit.

 

[Roady [MVP]]

Yes, as Cached Exchange Mode was introduced in Outlook 2003.