IMO, Cached mode is ideal for corporate employees sitting at their desk. It creates an identical copy of their mail, that is accessible even when their server is down. Outlook 2003+ requires cached mode if you want to use their junk mail filters. Note: the first time you connect with cached mode, you better be close to the server, it has to make that first copy of the entire mailbox (especially if you imported the PST). In addition, with the mailbox stored on the server, it can be accessed by others, ie share calendars, shared contacts, plan meetings (and see availability), no loss when an employee leaves the company, etc.
For the remote users, I'd look into RPC over HTTP and have your clients configure Outlook to pull via that method. They can use their Outlook anywhere and get to it. Using POP to pull mail into a PST can remove mail from the mailbox, so it is not accessible any place else that the single point (of failure). PSTs created in Outlook 2003 and earlier have a 2gb mailbox limit. Go over that and you WILL lose email. A PST created with 2007 and the new format, are allowed to go larger, but?? who really wants to backup those extra open files.. Gotta close Outlook to back them up.. So, in short Cached mode means Blackberry, spam filtering, centralized administration, and shared calendars. PST means single point of failure, losing email due to size limits, and possible litigation issues when an employee takes their email with them when they leave (and you have no way to capture it).. On Wed, Feb 27, 2008 at 3:18 AM, Jon Harris <[EMAIL PROTECTED]> wrote: > Sorry for the very basic question here. What is the difference between > cached and un-cached mode in the client setting for Exchange? I am not the > Exchange admin, you could not pay me enough to take on that extra work, but > I do have to support the clients. We are moving from a Linux POP/IMAP > server to Exchange and all of my clients are currently set up to POP their > mail. I do have mobile clients that I already know will be an issue but I > will start on that later. At the moment I am looking at just getting this > setup and understanding why somethings are certain ways and not other ways. > I will discuss specific issues with the Exchange admin. > > Any guidance would help a lot. Specific reading for non-Exchange aware > people would be more help. > > Jon > > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
