Header option file location

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For destination channel based header trimming to be applied upon message enqueue after normal header processing, the MTA looks in the table directory, IMTA_TABLE:, for header options files with names of the form channel_headers.opt, where channel is the name of the channel with which the header option file is associated. (In Unified Configuration, such header options files continue to be used.) The headertrim channel option and/or the innertrim channel option must be specified on the channel to enable the use of such a header option file.

For source channel based header trimming to be applied upon message enqueue before normal header processing, the MTA looks in the table directory, IMTA_TABLE:, for header options files with names of the form channel_read_headers.opt, where channel is the name of the channel with which the header option file is associated. (In Unified Configuration, such header options files continue to be used.) The headerread channel option must be specified on the channel to enable the use of such a header option file.

Header option files should be world readable.


See also: