Apple Mac OS X Server Version 10.4 or Later Manual de usuario Pagina 69

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Chapter 2 Mail Service Maintenance 69
Reclaiming Disk Space Used by Mail Service Log Archives
Mac OS X Server automatically reclaims disk space used by mail service logs when they
reach a certain size or age. If youre comfortable using the Terminal application and
UNIX command-line tools, you can use the command-line tool diskspacemonitor” to
monitor disk space whenever you want, and delete or move the log archives. For
additional information, see diskspacemonitor in the command-line administration
guide.
Dealing With a Full Disk
Mail services become erratic and suffer from data corruption if the disk storing your
mail reaches maximum capacity. When your disk reaches full capacity, you’ll experience
the following behaviors:
Postfix behavior
If the operating system can still spawn the smtpd process, Postfix will try to function
and attempt to accept the message. The message will then be rejected with a disk full”
error. Otherwise, its behavior is unpredictable.
Cyrus behavior
If the operating system can still spawn an imapd or pop3d process, the server will
attempt to open the user’s mail account. Upon success, the user can access mail as
normal. Any changes that require database additions and causing the database to
grow can cause the process to hang and corrupt the database.
Working With Undeliverable Mail
Mail messages might be undeliverable for several reasons. You can configure your mail
service to forward undeliverable incoming mail, limit attempts to deliver problematic
outgoing mail, report failed delivery attempts, and change mail service timeouts to
increase chances of connection success.
Incoming mail might be undeliverable because it has a misspelled address or is
addressed to a deleted user account. Outgoing mail might be undeliverable because
it’s misaddressed or the destination mail server isn’t working.
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