X-Complaints-To, NNTP-Posting-Date, and User-Agent.
"\\|^precedence:\\|^list-help:\\|^list-post:\\|^list-subscribe:"
"\\|^list-id:\\|^list-unsubscribe:\\|^list-archive:"
"\\|^content-type:\\|^content-length:"
- "\\|^x-attribution:\\|^x-disclaimer:")
+ "\\|^x-attribution:\\|^x-disclaimer:\\|^x-trace:"
+ "\\|^x-complaints-to:\\|^nntp-posting-date:\\|^user-agent:")
"*Regexp to match header fields that Rmail should normally hide.
This variable is used for reformatting the message header,
which normally happens once for each message,