Name
${hdrlen}
Synopsis
When a header is checked using the $>
+ in an
H
configuration command (Section 25.5.1), the unaltered value of the header is stored
in the ${currHeader}
macro and the length of that
header’s unaltered value is stored in this
${hdrlen}
macro. Note that the value stored in
${currHeader}
will be truncated to MAXNAME (MAX...) characters, the default for which is 256. If
the header’s value was longer than MAXNAME
characters, the number of characters stored in
${currHeader}
will differ from the value stored in
${hdrlen}
. For an illustration of one way to use
this macro, see Section 25.5.1.1.
${hdrlen}
is transient. If it is defined in the
configuration file or in the command line, that definition can be
ignored by sendmail. Note that a
$&
prefix is necessary when you reference this
macro in rules (that is, use $&{hdrlen}
, not
${hdrlen}
).
Get Sendmail, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.