Variable: mh-invisible-header-fields-internal
mh-invisible-header-fields-internal is a variable defined in
mh-e.el.gz.
Value
Large value
("Abuse-Reports-To:" "Accept-Language:" "AcceptLanguage:"
"Accreditor:" "Also-Control:" "Alternate-recipient:" "Approved-By:"
"Approved:" "Article-Names:" "Article-Updates:"
"Authentication-Results:" "Auto-forwarded:" "Autoforwarded:"
"Bestservhost:" "Bounces-To:" "Bounces_to:" "Bytes:" "Cancel-Key:"
"Cancel-Lock:" "Comment:" "Content-" "Control:"
"Conversion-With-Loss:" "Conversion:" "Delivered-To:"
"Delivery-Date:" "Delivery:" "Discarded-X400-" "Disclose-Recipients:"
"Disposition-Notification-Options:" "Disposition-Notification-To:"
"Distribution:" "DKIM-" "DL-Expansion-History:" "DomainKey-"
"DomainKey-Signature:" "Encoding:" "Envelope-to:" "Errors-To:"
"Expires:" "Expiry-Date:" "Face:" "Followup-To:" "For-Approval:"
"For-Comment:" "For-Handling:" "Forwarded:" "From "
"Generate-Delivery-Report:" "Importance:" "In-Reply-To:"
"Incomplete-Copy:" "Keywords:" "Language:" "Lines:" "List-"
"Mail-Copies-To:" "Mail-Followup-To:" "Mail-from:" "Mail-Reply-To:"
"Mailing-List:" "Message-Content:" "Message-ID:" "Message-Type:"
"Mime-Version" "Msgid:" "NNTP-" "Obsoletes:" "Old-Return-Path:"
"OpenPGP:" "Original-Encoded-Information-Types:" "Original-Lines:"
"Original-Newsgroups:" "Original-NNTP-" "Original-Path:"
"Original-Received:" "Original-Recipient:" "Original-To:"
"Original-X-" "Origination-Client:" "Originator:" "P1-Content-Type:"
"P1-Message-Id:" "P1-Recipient:" "Path:" "Pics-Label:" "Posted-To:"
"Precedence:" "Prev-Resent" "Prevent-NonDelivery-Report:" "Priority:"
"Read-Receipt-To:" "Received-SPF:" "Received:" "References:"
"Registered-Mail-Reply-Requested-By:" "Remailed-" "Replaces:"
"Replied:" "Resent-" "Return-Path:" "Return-Receipt-Requested:"
"Return-Receipt-To:" "Seal-Send-Time:" "See-Also:" "Sensitivity:"
"Speech-Act:" "Status:" "Supersedes:" "Telefax:" "Thread-"
"Thread-Index:" "Thread-Topic:" "Translated-By:" "Translation-Of:"
"Ua-Content-Id:" "Via:" "X-Abuse-and-DMCA-" "X-Abuse-Info:"
"X-Accept-Language:" "X-Ack:" "X-ACL-Warn:" "X-Admin:"
"X-Administrivia-To:" "X-AMAZON" "X-AnalysisOut:" "X-AntiAbuse:"
"X-Antivirus-Scanner:" "X-AOL-IP:" "X-Apparently-From:"
"X-Apparently-To:" "X-Attribution:" "X-AuditID:"
"X-Authenticated-Info:" "X-Authenticated-Sender:"
"X-Authentication-Info:" "X-Authentication-Warning:"
"X-Authority-Analysis:" "X-Auto-Response-Suppress:" "X-Barracuda-"
"X-Bayes-Prob:" "X-Beenthere:" "X-BFI:" "X-Bigfish:" "X-Bogosity:"
"X-BPS1:" "X-BPS2:" "X-Brightmail-Tracker:" "X-BrightmailFiltered:"
"X-Bugzilla-" "X-Cam-" "X-Campaign-Id:" "X-Campaign:" "X-Campaignid:"
"X-CanIt-Geo:" "X-Cloudmark-SP-" "X-Comment:" "X-Complaints-To:"
"X-Completed:" "X-Confirm-Reading-To:" "X-Content-Filtered-By:"
"X-ContentStamp:" "X-Country-Chain:" "X-Cr-Hashedpuzzle:"
"X-Cr-Puzzleid:" "X-Cron-Env:" "X-DCC-" "X-Declude-" "X-Dedicated:"
"X-Delivered" "X-Destination-ID:" "X-detected-operating-system:"
"X-DH-Virus-" "X-DMCA" "X-DocGen-Version:" "X-Domain:"
"X-Echelon-Distraction" "X-EFL-Spamscore:" "X-eGroups-" "X-EID:"
"X-ELNK-Trace:" "X-EM-" "X-Email-Type-Id:" "X-Enigmail-Version:"
"X-Envelope-Date:" "X-Envelope-From:" "X-Envelope-Sender:"
"X-Envelope-To:" "X-EviteMessageId:" "X-Evolution:" "X-ExtLoop"
"X-Face:" "X-Facebook" "X-FB-SS:" "X-fmx-" "X-Folder:" "X-Forwarded-"
"X-From-Line" "X-FuHaFi:" "X-Generated-By:" "X-Gmail-"
"X-Gnus-Mail-Source:" "X-Google-" "X-Google-Sender-Auth:"
"X-Greylist:" "X-Habeas-" "X-Hashcash:" "X-Headers-End:" "X-HPL-"
"X-HR-" "X-HTTP-UserAgent:" "X-Hz" "X-Identity:" "X-IEEE-UCE-"
"X-Image-URL:" "X-IMAP:" "X-Info:" "X-IronPort-"
"X-ISI-4-30-3-MailScanner:" "X-J2-" "X-Jira-Fingerprint:"
"X-Junkmail-" "X-Juno-" "X-Key:" "X-Launchpad-" "X-List-Host:"
"X-List-Subscribe:" "X-List-Unsubscribe:" "X-Listprocessor-"
"X-Listserver:" "X-Loop:" "X-Lrde-Mailscanner:" "X-Lumos-SenderID:"
"X-mail_abuse_inquiries:" "X-Mail-from:" "X-MAIL-INFO:" "X-Mailer_"
"X-MailFlowPolicy:" "X-Mailing-List:" "X-MailingID:"
"X-Mailman-Approved-At:" "X-Mailman-Version:" "X-MailScanner"
"X-Mailutils-Message-Id" "X-Majordomo:" "X-Match:"
"X-MaxCode-Template:" "X-MB-Message-" "X-MDaemon-Deliver-To:"
"X-MDRemoteIP:" "X-ME-Bayesian:" "X-Message-Id" "X-Message-Type:"
"X-MessageWall-Score:" "X-MHE-Checksum:" "X-MIME-Autoconverted:"
"X-MIMEOLE:" "X-MIMETrack:" "X-Mms-" "X-Mozilla-Status:" "X-MS-"
"X-Msmail-" "X-MSMail-Priority" "X-MXL-Hash:" "X-NAI-Spam-" "X-News:"
"X-Newsreader:" "X-No-Archive:" "X-Notes-Item:" "X-Notification-"
"X-Notifications:" "X-OperatingSystem:" "X-Oracle-Calendar:"
"X-ORBL:" "X-Orcl-Content-Type:" "X-Organization:"
"X-Original-Arrival-Type:" "X-Original-Complaints-To:"
"X-Original-Date:" "X-Original-To:" "X-Original-Trace:"
"X-OriginalArrivalTime:" "X-Originating-Email:" "X-Originating-IP:"
"X-pair-" "X-PGP:" "X-PID:" "X-PMG-" "X-PMX-Version:"
"X-Policyd-Weight:" "X-Postfilter:" "X-Priority:" "X-Proofpoint-"
"X-Provags-ID:" "X-PSTN-" "X-Qotd-" "X-RCPT-TO:" "X-Received-Date:"
"X-Received:" "X-Report-Abuse-To:" "X-Request-" "X-Resolved-to:"
"X-Return-Path-Hint:" "X-RIM-" "X-RM" "X-RocketYMMF:" "X-Roving-"
"X-SA-Exim-" "X-Sasl-enc:" "X-SBClass:" "X-SBNote:" "X-SBPass:"
"X-SBRS:" "X-SBRule:" "X-Scanned-By:" "X-Sender-ID:" "X-Sender:"
"X-Sendergroup:" "X-Server-Date:" "X-Server-Uuid:" "X-Service-Code:"
"X-SFDC-" "X-Sieve:" "X-SMFBL:" "X-SMHeaderMap:" "X-SMTP-" "X-Source"
"X-Spam-" "X-Spam:" "X-SpamBouncer:" "X-SPF-" "X-Status"
"X-Submission-Address:" "X-Submissions-To:" "X-Sun-Charset:"
"X-Telecom-Digest" "X-TM-IMSS-Message-ID:" "X-Trace:" "X-UID"
"X-UIDL:" "X-Unity" "X-UNTD-" "X-URI:" "X-URL:" "X-USANET-"
"X-Usenet-Provider" "X-UserInfo1:" "X-VGI-OESCD:" "X-VirtualServer:"
"X-VirtualServerGroup:" "X-Virus-" "X-Vms-To:" "X-VSMLoop:"
"X-WebTV-Signature:" "X-Wss-Id:" "X-X-Sender:" "X-XPT-XSL-Name:"
"X-xsi-" "X-XWALL-" "X-Y-GMX-Trusted:" "X-Yahoo" "X-Yahoo-Newman-"
"X-YMail-" "X-ZixNet:" "X400-" "Xref:")
Documentation
List of default header fields that are not to be shown.
Do not alter this variable directly. Instead, add entries from
here that you would like to be displayed in
mh-invisible-header-fields-default and add entries to hide in
mh-invisible-header-fields.
Source Code
;; Defined in /usr/src/emacs/lisp/mh-e/mh-e.el.gz
;; These entries have been intentionally excluded by the developers.
;; "Comments:" ; RFC 822 (or later) - show this one
;; "Fax:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
;; "Mail-System-Version:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
;; "Mailer:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
;; "Organization:" ;
;; "Phone:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
;; "Reply-By:" ; RFC 2156
;; "Reply-To:" ; RFC 822 (or later)
;; "Sender:" ;
;; "User-Agent:" ; Similar to X-Mailer, so display it.
;; "X-Mailer:" ;
;; "X-Operator:" ; Similar to X-Mailer, so display it
;; Keep fields alphabetized with case folding. Use M-:(setq
;; sort-fold-case t) from the minibuffer to accomplish this.
;; Mention source, if known.
(defvar mh-invisible-header-fields-internal
'(
"Abuse-Reports-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Accept-Language:"
"AcceptLanguage:"
"Accreditor:" ; Habeas
"Also-Control:" ; H. Spencer: News Article Format and Transmission, June 1994
"Alternate-recipient:" ; RFC 2156
"Approved-By:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Approved:" ; RFC 1036
"Article-Names:" ; H. Spencer: News Article Format and Transmission, June 1994
"Article-Updates:" ; H. Spencer: News Article Format and Transmission, June 1994
"Authentication-Results:"
"Auto-forwarded:" ; RFC 2156
"Autoforwarded:" ; RFC 2156
"Bestservhost:"
"Bounces-To:"
"Bounces_to:"
"Bytes:"
"Cancel-Key:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Cancel-Lock:" ; NNTP posts
"Comment:" ; Shows up with DomainKeys
"Content-" ; RFC 2045, 1123, 1766, 1864, 2045, 2110, 2156, 2183, 2912
"Control:" ; RFC 1036
"Conversion-With-Loss:" ; RFC 2156
"Conversion:" ; RFC 2156
"Delivered-To:" ; Egroups/yahoogroups mailing list manager
"Delivery-Date:" ; RFC 2156
"Delivery:"
"Discarded-X400-" ; RFC 2156
"Disclose-Recipients:" ; RFC 2156
"Disposition-Notification-Options:" ; RFC 2298
"Disposition-Notification-To:" ; RFC 2298
"Distribution:" ; RFC 1036
"DKIM-" ; https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail
"DL-Expansion-History:" ; RFC 2156
"DomainKey-" ; https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail
"DomainKey-Signature:"
"Encoding:" ; RFC 1505
"Envelope-to:"
"Errors-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Expires:" ; RFC 1036
"Expiry-Date:" ; RFC 2156
"Face:" ; Gnus Face header
"Followup-To:" ; RFC 1036
"For-Approval:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"For-Comment:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"For-Handling:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Forwarded:" ; MH
"From " ; sendmail
"Generate-Delivery-Report:" ; RFC 2156
"Importance:" ; RFC 2156, 2421
"In-Reply-To:" ; RFC 822 (or later)
"Incomplete-Copy:" ; RFC 2156
"Keywords:" ; RFC 822 (or later)
"Language:" ; RFC 2156
"Lines:" ; RFC 1036
"List-" ; RFC 2369, 2919
"Mail-Copies-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Mail-Followup-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Mail-from:" ; MH
"Mail-Reply-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Mailing-List:" ; Egroups/yahoogroups mailing list manager
"Message-Content:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Message-ID:" ; RFC 822 (or later)
"Message-Type:" ; RFC 2156
"Mime-Version" ; RFC 2045
"Msgid:"
"NNTP-" ; News
"Obsoletes:" ; RFC 2156
"Old-Return-Path:"
"OpenPGP:"
"Original-Encoded-Information-Types:" ; RFC 2156
"Original-Lines:" ; mail to news
"Original-Newsgroups:" ; mail to news
"Original-NNTP-" ; mail to news
"Original-Path:" ; mail to news
"Original-Received:" ; mail to news
"Original-Recipient:" ; RFC 2298
"Original-To:" ; mail to news
"Original-X-" ; mail to news
"Origination-Client:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Originator:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"P1-Content-Type:" ; X400
"P1-Message-Id:" ; X400
"P1-Recipient:" ; X400
"Path:" ; RFC 1036
"Pics-Label:" ; W3C
"Posted-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Precedence:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Prev-Resent" ; MH
"Prevent-NonDelivery-Report:" ; RFC 2156
"Priority:" ; RFC 2156
"Read-Receipt-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Received-SPF:" ; Gmail
"Received:" ; RFC 822 (or later)
"References:" ; RFC 822 (or later)
"Registered-Mail-Reply-Requested-By:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Remailed-" ; MH
"Replaces:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Replied:" ; MH
"Resent-" ; RFC 822 (or later)
"Return-Path:" ; RFC 822 (or later)
"Return-Receipt-Requested:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Return-Receipt-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Seal-Send-Time:"
"See-Also:" ; H. Spencer: News Article Format and Transmission, June 1994
"Sensitivity:" ; RFC 2156, 2421
"Speech-Act:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Status:" ; sendmail
"Supersedes:" ; H. Spencer: News Article Format and Transmission, June 1994
"Telefax:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Thread-"
"Thread-Index:"
"Thread-Topic:"
"Translated-By:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Translation-Of:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"Ua-Content-Id:" ; X400
"Via:" ; MH
"X-Abuse-and-DMCA-"
"X-Abuse-Info:"
"X-Accept-Language:" ; Netscape/Mozilla
"X-Ack:"
"X-ACL-Warn:" ; https://www.exim.org
"X-Admin:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Administrivia-To:"
"X-AMAZON" ; Amazon.com
"X-AnalysisOut:" ; Exchange
"X-AntiAbuse:" ; cPanel
"X-Antivirus-Scanner:"
"X-AOL-IP:" ; AOL WebMail
"X-Apparently-From:" ; MS Outlook
"X-Apparently-To:" ; Egroups/yahoogroups mailing list manager
"X-Attribution:"
"X-AuditID:"
"X-Authenticated-Info:" ; Verizon.net?
"X-Authenticated-Sender:" ; AT&T Message Center (webmail)
"X-Authentication-Info:" ; verizon.net?
"X-Authentication-Warning:" ; sendmail
"X-Authority-Analysis:"
"X-Auto-Response-Suppress:" ; Exchange
"X-Barracuda-" ; Barracuda spam scores
"X-Bayes-Prob:" ; IEEE spam filter
"X-Beenthere:" ; Mailman mailing list manager
"X-BFI:"
"X-Bigfish:"
"X-Bogosity:" ; bogofilter
"X-BPS1:" ; http://www.boggletools.com [dead link?]
"X-BPS2:" ; http://www.boggletools.com [dead link?]
"X-Brightmail-Tracker:" ; Brightmail
"X-BrightmailFiltered:" ; Brightmail
"X-Bugzilla-" ; Bugzilla
"X-Cam-" ; Cambridge scanners
"X-Campaign-Id:"
"X-Campaign:"
"X-Campaignid:"
"X-CanIt-Geo:" ; IEEE spam filter
"X-Cloudmark-SP-" ; Cloudmark (www.cloudmark.com)
"X-Comment:" ; AT&T Mailennium
"X-Complaints-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Completed:"
"X-Confirm-Reading-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Content-Filtered-By:"
"X-ContentStamp:" ; NetZero
"X-Country-Chain:" ; http://www.declude.com/x-note.htm [dead link?]
"X-Cr-Hashedpuzzle:"
"X-Cr-Puzzleid:"
"X-Cron-Env:"
"X-DCC-" ; SpamAssassin
"X-Declude-" ; http://www.declude.com/x-note.htm [dead link?]
"X-Dedicated:"
"X-Delivered"
"X-Destination-ID:"
"X-detected-operating-system:" ; GNU.ORG?
"X-DH-Virus-"
"X-DMCA"
"X-DocGen-Version:" ; DocGen
"X-Domain:"
"X-Echelon-Distraction"
"X-EFL-Spamscore:" ; MIT alumni spam filtering
"X-eGroups-" ; Egroups/yahoogroups mailing list manager
"X-EID:"
"X-ELNK-Trace:" ; Earthlink mailer
"X-EM-" ; Some ecommerce software
"X-Email-Type-Id:" ; Paypal https://www.paypal.com
"X-Enigmail-Version:"
"X-Envelope-Date:" ; GNU mailutils
"X-Envelope-From:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Envelope-Sender:"
"X-Envelope-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-EviteMessageId:" ; evite.com
"X-Evolution:" ; Evolution mail client
"X-ExtLoop"
"X-Face:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Facebook" ; Facebook
"X-FB-SS:"
"X-fmx-"
"X-Folder:" ; Spam
"X-Forwarded-" ; Google+
"X-From-Line"
"X-FuHaFi:" ; https://www.gmx.net/
"X-Generated-By:" ; launchpad.net
"X-Gmail-" ; Gmail
"X-Gnus-Mail-Source:" ; gnus
"X-Google-" ; Google mail
"X-Google-Sender-Auth:"
"X-Greylist:" ; milter-greylist-1.2.1
"X-Habeas-" ; https://www.returnpath.net
"X-Hashcash:" ; hashcash
"X-Headers-End:" ; SpamCop
"X-HPL-"
"X-HR-"
"X-HTTP-UserAgent:"
"X-Hz" ; Hertz
"X-Identity:" ; http://www.declude.com/x-note.htm [dead link?]
"X-IEEE-UCE-" ; IEEE spam filter
"X-Image-URL:"
"X-IMAP:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Info:" ; NTMail
"X-IronPort-" ; IronPort AV
"X-ISI-4-30-3-MailScanner:"
"X-J2-"
"X-Jira-Fingerprint:" ; JIRA
"X-Junkmail-" ; RCN?
"X-Juno-" ; Juno
"X-Key:"
"X-Launchpad-" ; plaunchpad.net
"X-List-Host:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-List-Subscribe:" ; Unknown mailing list managers
"X-List-Unsubscribe:" ; Unknown mailing list managers
"X-Listprocessor-" ; ListProc(tm) by CREN
"X-Listserver:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Loop:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Lrde-Mailscanner:"
"X-Lumos-SenderID:" ; Roving ConstantContact
"X-mail_abuse_inquiries:" ; https://www.salesforce.com
"X-Mail-from:" ; fastmail.fm
"X-MAIL-INFO:" ; NetZero
"X-Mailer_"
"X-MailFlowPolicy:" ; Cisco Email Security (formerly IronPort; http://www.ironport.com)
"X-Mailing-List:" ; Unknown mailing list managers
"X-MailingID:"
"X-Mailman-Approved-At:" ; Mailman mailing list manager
"X-Mailman-Version:" ; Mailman mailing list manager
"X-MailScanner" ; ListProc(tm) by CREN
"X-Mailutils-Message-Id" ; GNU Mailutils
"X-Majordomo:" ; Majordomo mailing list manager
"X-Match:"
"X-MaxCode-Template:" ; Paypal https://www.paypal.com
"X-MB-Message-" ; AOL WebMail
"X-MDaemon-Deliver-To:"
"X-MDRemoteIP:"
"X-ME-Bayesian:" ; https://www.newmediadevelopment.net/page.cfm/parent/Client-Area/content/Managing-spam/
"X-Message-Id"
"X-Message-Type:"
"X-MessageWall-Score:" ; Unknown mailing list manager, AUC TeX
"X-MHE-Checksum:" ; Checksum added during index search
"X-MIME-Autoconverted:" ; sendmail
"X-MIMEOLE:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/sendmail
"X-MIMETrack:"
"X-Mms-" ; T-Mobile pictures
"X-Mozilla-Status:" ; Netscape/Mozilla
"X-MS-" ; MS Outlook
"X-Msmail-" ; MS Outlook
"X-MSMail-Priority" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-MXL-Hash:"
"X-NAI-Spam-" ; Network Associates Inc. SpamKiller
"X-News:" ; News
"X-Newsreader:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-No-Archive:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Notes-Item:" ; Lotus Notes Domino structured header
"X-Notification-" ; Google+
"X-Notifications:" ; Google+
"X-OperatingSystem:"
"X-Oracle-Calendar:" ; Oracle calendar invitations
"X-ORBL:"
"X-Orcl-Content-Type:"
"X-Organization:"
"X-Original-Arrival-Type:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Original-Complaints-To:"
"X-Original-Date:" ; SourceForge mailing list manager
"X-Original-To:"
"X-Original-Trace:"
"X-OriginalArrivalTime:" ; Hotmail
"X-Originating-Email:" ; Hotmail
"X-Originating-IP:" ; Hotmail
"X-pair-"
"X-PGP:"
"X-PID:"
"X-PMG-"
"X-PMX-Version:"
"X-Policyd-Weight:" ; policyd-weight (Postfix)
"X-Postfilter:"
"X-Priority:" ; MS Outlook
"X-Proofpoint-" ; Proofpoint mail filter
"X-Provags-ID:"
"X-PSTN-"
"X-Qotd-" ; User added
"X-RCPT-TO:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Received-Date:"
"X-Received:"
"X-Report-Abuse-To:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Request-"
"X-Resolved-to:" ; fastmail.fm
"X-Return-Path-Hint:" ; Roving ConstantContact
"X-RIM-" ; Research In Motion (i.e. BlackBerry)
"X-RM"
"X-RocketYMMF:" ; Yahoo
"X-Roving-" ; Roving ConstantContact
"X-SA-Exim-" ; Exim SpamAssassin
"X-Sasl-enc:" ; Apple Mail
"X-SBClass:" ; Spam
"X-SBNote:" ; Spam
"X-SBPass:" ; Spam
"X-SBRS:"
"X-SBRule:" ; Spam
"X-Scanned-By:"
"X-Sender-ID:" ; Google+
"X-Sender:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Sendergroup:" ; Cisco Email Security (formerly IronPort; http://www.ironport.com)
"X-Server-Date:"
"X-Server-Uuid:"
"X-Service-Code:"
"X-SFDC-" ; https://www.salesforce.com
"X-Sieve:" ; Sieve filtering
"X-SMFBL:"
"X-SMHeaderMap:"
"X-SMTP-"
"X-Source"
"X-Spam-" ; SpamAssassin
"X-Spam:" ; Exchange
"X-SpamBouncer:" ; Spam
"X-SPF-"
"X-Status"
"X-Submission-Address:"
"X-Submissions-To:"
"X-Sun-Charset:"
"X-Telecom-Digest"
"X-TM-IMSS-Message-ID:" ; https://www.trendmicro.com
"X-Trace:"
"X-UID"
"X-UIDL:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-Unity"
"X-UNTD-" ; NetZero
"X-URI:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-URL:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-USANET-" ; usa.net
"X-Usenet-Provider"
"X-UserInfo1:"
"X-VGI-OESCD:"
"X-VirtualServer:"
"X-VirtualServerGroup:"
"X-Virus-" ;
"X-Vms-To:"
"X-VSMLoop:" ; NTMail
"X-WebTV-Signature:"
"X-Wss-Id:" ; Worldtalk gateways
"X-X-Sender:" ; https://people.dsv.su.se/~jpalme/ietf/mail-headers/
"X-XPT-XSL-Name:" ; Paypal https://www.paypal.com
"X-xsi-"
"X-XWALL-" ; https://www.dataenter.co.at/doc/xwall_undocumented_config.htm
"X-Y-GMX-Trusted:" ; https://www.gmx.net/
"X-Yahoo"
"X-Yahoo-Newman-"
"X-YMail-"
"X-ZixNet:"
"X400-" ; X400
"Xref:" ; RFC 1036
)
"List of default header fields that are not to be shown.
Do not alter this variable directly. Instead, add entries from
here that you would like to be displayed in
`mh-invisible-header-fields-default' and add entries to hide in
`mh-invisible-header-fields'.")