Headers channel options

There are a number of channel options especially relevant regarding header line processing and handling; those channel options relating to header line processing other than address handling in header lines are listed here. Note that channel options that relate more to general address handling (including address handling in headers) are instead listed primarily under Addresses channel options.

See also:
 * addlineaddrs Option
 * addreturnpath Option
 * authhost Option
 * authrewrite Option
 * bccserver Option
 * commentinc Option
 * commentmap Option
 * commentomit Option
 * commentstrip Option
 * commenttotal Option
 * datefour Option
 * datetwo Option
 * dayofweek Option
 * defaulthost Option
 * dropblank Option
 * envelopetunnel Option
 * expirysource Option
 * noexpirysource Option
 * fixsyntaxerrors Option
 * forcedreceivedfrom Option
 * headerdecodesrs Option
 * includereceivedip Option
 * passsyntaxerrors Option
 * headerbottom Option
 * headercut Option
 * headerfoldpreserve Option
 * headerfoldremove Option
 * headerinc Option
 * headerkeeporder Option
 * headerlabelalignment Option
 * headerlimit Option
 * headerlineincrement Option
 * headerlinelength Option
 * headeromit Option
 * headerread Option
 * headerset7 Option
 * headerset8 Option
 * headersetesc Option
 * headertrailingpreserve Option
 * headertrailingremove Option
 * headertrim Option
 * inner Option
 * innertrim Option
 * language Option
 * limitheadertermination Option
 * maxheaderaddrs Option
 * maxheaderchars Option
 * missingrecipientpolicy Option
 * noaddlineaddrs Option
 * noaddreturnpath Option
 * noauthhost Option
 * nodayofweek Option
 * nodefaulthost Option
 * nodropblank Option
 * noheaderdecodesrs Option
 * noheaderread Option
 * noheadertrim Option
 * noinner Option
 * noinnertrim Option
 * noreceivedfor Option
 * noreceivedfrom Option
 * noremotehost Option
 * norestricted Option
 * noreverse Option
 * norules Option
 * nosourceinner Option
 * nobccserver Option
 * nox_env_to Option
 * noxclient Option
 * conditionalpassthrough Option
 * passthrough Option
 * personalinc Option
 * personalmap Option
 * personalomit Option
 * personalstrip Option
 * receivedfor Option
 * receivedfrom Option
 * receivedstate Option
 * relaxheadertermination Option
 * remotehost Option
 * restricted Option
 * reverse Option
 * rules Option
 * sourcecommentinc Option
 * sourcecommentmap Option
 * sourcecommentomit Option
 * sourcecommentstrip Option
 * sourcecommenttotal Option
 * sourceinner Option
 * sourcepersonalinc Option
 * sourcepersonalmap Option
 * sourcepersonalomit Option
 * sourcepersonalstrip Option
 * suppressreceivedip Option
 * unrestricted Option
 * usereplyto Option
 * useresent Option
 * x_env_to Option
 * xclient Option
 * xclientrepeat Option
 * xclientsasl Option
 * xclientsaslrepeat Option
 * Addresses channel options
 * Functional group list of channel options