If the entire
CheckpointInterval option is missing, the default is 10. There is a small performance
penalty that increases as num approaches 1. A good starting value is 4, meaning that at
most, four people will get duplicate deliveries. Note that the F=m flag on local delivery will
try as many recipients as possible before checkpointing, even if that number is greater than
the value of this CheckpointInterval option.
The CheckpointInterval option is safe. Even if it is specified from the command line, sendmail
retains its special privileges. Prior to V8.13, the CheckpointInterval option could
have its value raised by anyone using the command line. But beginning with V8.13, only
the trusted user, as defined by the TrustedUser option (?§24.9.122 on page 1112) may raise
this value on the command line.
24.9.15 ClassFactor
Multiplier for priority increments All versions
This ClassFactor option specifies a multiplying weight (factor) for a message??™s precedence
when determining a message??™s priority. This option interacts with the RecipientFactor
option (?§24.9.95 on page 1077) and both options are described under that latter option.
The forms of the ClassFactor option are as follows:
O ClassFactor=factor ?†? configuration file (V8.7 and later)
-OClassFactor=factor ?†? command line (V8.7 and later)
define(`confWORK_CLASS_FACTOR??,factor) ?†? mc configuration (V8.
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