mirror of
https://github.com/KumoCorp/kumomta.git
synced 2026-10-04 16:00:36 +00:00
Wez Furlong
d2f31b4fdf
Headers were built and rebuilt as "Mime-Version" rather than "MIME-Version". Both are valid per RFC 2045, but some spam filters, such as rspamd, score the mixed-case form as a deliverability signal. Fix the header name in the accessor macro and in ParsedHeader's grammar table, the places that spell it, and update the snapshot tests across mailparsing, message, kumo-log-types, mod-mimepart, and kumod that captured the old spelling, along with the reference docs that showed the old casing in their examples. #564
55 lines
1.7 KiB
Markdown
55 lines
1.7 KiB
Markdown
# value
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```lua
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local value = header.value
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```
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{{since('2025.10.06-5ec871ab')}}
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Depending on the header name, returns one of the structured representations of the header value.
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If there is no defined header name and structured representation, the fallback
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behavior is to return the same value that you'd see if you accessed
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[header.unstructured](unstructured.md).
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!!! note
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For the sake of forwards compatibility, it is possible that we will add
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support for names and structured representations in future versions. In that
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scenario, if you were using `header.value` and relying on it returning
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the same value as `header.unstructured` then your logic may be broken
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by upgrading.
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With that in mind, we recommend that you explicitly use `header.unstructured`
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in your code for headers that are not included in the table below, rather
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than relying on the fallback behavior.
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## Supported Header Names and Types
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If the `Since` column is blank, it is assumed to be since the inception of `header.value`,
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which is the version shown at the top of this page.
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|Name|Equivalent field accessor|Since|
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|----|----|-----|
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|Authentication-Results|authentication_results||
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|Bcc|address_list||
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|Cc|address_list||
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|Comments|unstructured||
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|Content-Disposition|mime_params||
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|Content-Id|message_id||
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|Content-Transfer-Encoding|mime_params||
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|Content-Type|mime_params||
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|From|mailbox_list||
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|Message-ID|message_id||
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|MIME-Version|unstructured||
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|References|message_id_list||
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|Reply-To|address_list||
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|Resent-Bcc|address_list||
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|Resent-Cc|address_list||
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|Resent-From|mailbox_list||
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|Resent-Sender|mailbox||
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|Resent-To|address_list||
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|Sender|mailbox||
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|Subject|unstructured||
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|To|address_list||
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