Enterprise developer Sybase has plans for its own proprietary iPhone e-mail software, Reuters reports. The company's CEO, John Chen, says that an iPhone
application should be released "soon," and certainly before the end of 2008. It will let people access corporate e-mail with the same amount of security available on other phones, such as Palm's Treo or RIM's BlackBerry.

Security has been one of the primary obstacles to corporate adoption of the iPhone, though Apple is attempting to remedy this through support for IT
administration and WPA2 encryption.

Although you can certainly sync multiple iPhones to a single computer, the reverse of that—syncing one iPhone to multiple computers, isn’t generally recommended by Apple. iPhone Atlas, an adapted except of Take Control of Your iPhone by Ted Landau.

From iPhone Atlas, 1/24/08: We previously noted an issue in which mail sent from the iPhone simply disappears into the void, never reaching its recipient, nor appearing in the “Sent Items” folder, and also never generating an error message indicating that anything has gone wrong.

In many cases, the fix for these issues is the same as one we noted for other mail-related problems: delete and re-establish the afflicted account. Tap Settings and then tap Mail. Tap on the problematic account, then scroll to the bottom and select Delete Account. Go back to the main Mail settings pane and tap Add Account to re-create the account, re-entering your settings. Note that you’ll lose any mail downloaded to the iPhone from non-mirrored POP accounts.

If you are using a Yahoo! or Gmail account and experiencing these problems, you may need to re-establish the accounts without using the predefined settings offered on the iPhone. Instead set up the accounts manually.

With GarageBand 4.1.1 you can export your original song, your original audio recordings, or use Apple Loops and iLife jingles to create a custom ringtone for your iPhone. apple.com ars technica