Workarounds for Mail.app and iCal
I recently had two problems with the Apple suite of applications. Mail.app regularly marked mails I had read on the IMAP server as unread again iCal doesn’t allow subscribing to SSL-encrypted calendars. That’s bad because our mail and calendar (Zimbra) runs on HTTPS. For the first problem the cause was the GPGMail plugin. There is a FAQ entry about the problem. Short answer: deactivate automated decription/verification in the GPGMail settings. The second one is a big worse. There is a hint on macosxhints.com. The idea is to set up a HTTP server which redirects to the HTTPS URL. iCal actually can handle HTTPS but it doesn’t allow you to enter it. The problem is that the security of this workaround is probably not guaranteed. Or in other words it may be possible that iCal sends out your password clear-text over the wire. ...