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22.6 Alphabetized Class Macros | 871
Before checking that parameter??™s length, sendmail looks to see whether the header name is in
the class $={checkMIMEFieldHeaders}. If it isn??™t, sendmail skips the parameter length check.
When V8.10 sendmail starts up, it predefines the $={checkMIMEFieldHeaders} class to
contain two MIME headers: the Content-Disposition: header (?§25.12.8 on page 1153); and
the Content-Type: header (?§25.12.12 on page 1154). You can add more headers with the C
or F configuration file command.
If any of these parameters are found to be too long, they are truncated to the limit imposed
by the MaxMimeHeaderLength option (?§24.9.69 on page 1047).
22.6.3 $={checkMIMEHeaders}
MIME headers for maximum legal length checking V8.10 and later
Beginning withV8.10 sendmail, th eMaxMimeHeaderLength option (?§24.9.69 on page 1047)
can be used to define the maximum length for selected MIME headers. Before making that
check, sendmail looks to see whether a particular header is in the class $={check-
MIMEHeaders}. If it isn??™t, sendmail skips this length check.
When V8.10 sendmail starts up, it predefines the $={checkMIMEHeaders} class to contain five
MIME headers: the Content-Disposition: header (?§25.
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