control the amount of time an undeliverable message is silently
retained in a given channel queue. PMDF is capable of returing a series
of warning messages to the originator and, if the message remains
undeliverable, PMDF will eventually return the entire message.
Different return handling for messages of different priorities may be
explicitly set using the
notices keyword values will be used for all
The keyword is followed by a list of up to five monotonically
increasing integer values. These values refer to the message ages at
which warning messages are sent. The ages have units of days if the
PMDF option RETURN_UNITS is 0 or not specified in the PMDF option file,
or hours if the PMDF option RETURN_UNITS is 1. When an undeliverable
message attains or exceeds the last listed age, it is returned
(i.e., bounced). When it attains any of the other ages, a
warning notice is sent. The default if no
is given is to use the
notices setting for the local, l,
channel. If no setting has been made for the local channel, then the
defaults 3, 6, 9, 12 are used meaning that warning messages are sent
when the message attains the ages 3, 6, and 9 days (or hours) and the
message is returned after remaining in the channel queue for more than
12 days (or hours).
The syntax for the
notices keyword uses no punctuation.
For example, the default return policy would be expressed as follows:
notices 3 6 9 12
If you want to change the notification ages for all of your channels,
then the simplest thing to do is to add a defaults channel block to the
start of the channel block section of your PMDF configuration file or
to add the
notices setting to your local channel. For
defaults notices 1 3 6 9 12 l defragment charset7 us-ascii charset8 dec-mcs example.com
C:\pmdf\table\pmdf.cnf(NT). It is important that a blank line appear before and after the line "
defaults notices...". See Section 2.3.5 for a full description of the defaults channel.
See Section 1.4.4 for more information on the
keywords and how they interact with return message processing.