I installed a new server with Plesk 7.5 about 6 months ago and have had random problems with email on both Mac and PC. Most recently on a mac the user sent out 3 emails with attachments (no filesize restriction) and the messages sat in her inbox for about 12 hours before they went out. We tried restarting the computer and mail client (I-Mail), which did not solve the problem. Now she is timing out when tryling to view new messages. She is setup using IMAP mail. Any suggestions??