Hi List, We're on Mac OSX Lion server 10.7.3 and before me, someone else was responsible for the server. Now I'm the person which have to take care of the server and I try now to fix some issues. One issue we found is this in our error logfile for caldavd. from the /var/log/caldavd/error.log ... 2013-03-21 16:00:50+0100 [-] [mailgateway] 2013-03-21 16:00:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] 2013-03-21 16:00:50+0100 [-] [mailgateway] 2013-03-21 16:00:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['URLMECH', 'INTERNAL'], 'Mechanisms', 'supported'] 2013-03-21 16:01:20+0100 [-] [mailgateway] 2013-03-21 16:01:20+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] 2013-03-21 16:01:20+0100 [-] [mailgateway] 2013-03-21 16:01:20+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['URLMECH', 'INTERNAL'], 'Mechanisms', 'supported'] 2013-03-21 16:01:50+0100 [-] [mailgateway] 2013-03-21 16:01:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] 2013-03-21 16:01:50+0100 [-] [mailgateway] 2013-03-21 16:01:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['URLMECH', 'INTERNAL'], 'Mechanisms', 'supported'] 2013-03-21 16:02:20+0100 [-] [mailgateway] 2013-03-21 16:02:20+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] 2013-03-21 16:02:20+0100 [-] [mailgateway] 2013-03-21 16:02:20+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['URLMECH', 'INTERNAL'], 'Mechanisms', 'supported'] 2013-03-21 16:02:50+0100 [-] [mailgateway] 2013-03-21 16:02:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] 2013-03-21 16:02:50+0100 [-] [mailgateway] 2013-03-21 16:02:50+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['URLMECH', 'INTERNAL'], 'Mechanisms', 'supported'] 2013-03-21 16:03:20+0100 [-] [mailgateway] 2013-03-21 16:03:20+0100 [IMAP4DownloadProtocol,client] Unhandled unsolicited response: ['OK', ['HIGHESTMODSEQ', '1'], 'Highest'] ... What does this mean and how can we fix this, get rid of? Thanks, Sirko