Dayofweek, nodayofweek Channel Options

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Day of week in date specifications (dayofweek, nodayofweek)

The RFC 822 specification allows for a leading day of the week specification in the date fields in message headers. However, some systems cannot accomodate day of the week information. This makes some systems reluctant to include this information, even though it is quite useful information to have in the headers.

The dayofweek and nodayofweek options control the MTA's processing of day of the week information. dayofweek, the default, instructs the MTA to retain any day of the week information and to add this information to date/time headers if it is missing.

nodayofweekinstructs the MTA to remove any leading day of the week information from date/time headers. This is intended to provide compatibility with incompliant mail systems that cannot process this information properly; it should never be used for any other purpose.