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The Configuration File
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27.3 V8 Comments

Beginning with V8 sendmail , for configuration files version 3 and above (see Section 27.5 ), all lines of the configuration file may have optional trailing comments. That is, all text from the first # character to the end of the line is ignored. Any whitespace (space or tab characters) leading up to the # is also ignored:

CWlocalhost mailhost  # This is a comment

from here to end of line ignored

To include a # character in a line under V8 sendmail , precede it with a backslash:


Note that you do not need to escape the # in the $# operator. The $ has a higher precedence, and $# is interpreted correctly.