Frank Bonnet: > What would happen with postfix if it cannot access to users's mailboxes ? > ( Eg : LAN down or filer stopped )
If the mailbox file system is hard mounted then the Postfix mail delivery agent will hang until the LAN comes back or the filer is rebooted. When a Postfix process hangs longer than some 1000s then a Postfix watchdog timer will kill it. If the mailbox file system is soft mounted then Postfix is not supported. If the mailbox file system is not mounted then Postfix gets a hard error (no such file or directory, not a directory, etc.) and returns the mail to the sender. That would also happen with non-NFS mounts. Don't start Postfix before all mail-related file systems are mounted, regardless of their type. Wietse