"Cannot Get Mail - The connection to the server failed" problem SOLVED
I had been getting a the dreaded "Cannot Get Mail - The connection to the
server failed" error on my first generation iPhone (firmware version 2.1) when syncing e-mail with an Exchange server. After many troubleshooting steps I found the problem was the size of the inbox (9K messages). After archiving older messages into folders the iPhone could again sync.
I hope the helps others.
BMc
MacBook Pro 2.33GHz, Mac OS X (10.5.5), 1st Gen iPhone ver 2.1