Name: maxheaderlines
Type: INT
Default-Value: 1000
Last-Modified: 2.3.17

Maximum number of lines of header that will be processed into cache
records.  Default 1000.  If set to zero, it is unlimited.  If a message
hits the limit, an error will be logged and the rest of the lines in the
header will be skipped.  This is to avoid malformed messages causing giant
cache records.
