rsync error 255

Today I was facing this error in a complex ssh/rsync backup: rsync error: unexplained error (code 255) at clientserver.c(778) The origin of this error was, in my case, a problem with the IP address in the "hosts allow" section of the rsync.conf file, resulting in a drop of connection.

Fixing Mail IMAP synchronization in Mavericks

After the update to Mavericks, Mail.app got stuck and wouldn't synchronise mails automatically with the server. Manually forcing the new mail reception worked. The fix is very simple: Go to Mail -> Preferences -> Accounts and choose the IMAP account to fix. In the advanced tab, tick the box "Use IDLE command if the server …