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docs: Nonstandard headers needing DKIM protection should be hidden

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iequidoo
2025-03-02 20:21:49 -03:00
committed by iequidoo
parent 8e25639126
commit 71dfcaa81c
1 changed files with 7 additions and 5 deletions
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12
src/mimefactory.rs
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@@ -835,11 +835,13 @@ impl MimeFactory {
// placed here.
let mut unprotected_headers: Vec<(&'static str, HeaderType<'static>)> = Vec::new();
// Headers that MUST NOT go into IMF header section.
//
// These are large headers which may hit the header section size limit on the server, such as
// Chat-User-Avatar with a base64-encoded image inside. Also there are headers duplicated here
// that servers mess up with in the IMF header section, like Message-ID.
// Headers that MUST NOT (only) go into IMF header section:
// - Large headers which may hit the header section size limit on the server, such as
// Chat-User-Avatar with a base64-encoded image inside.
// - Headers duplicated here that servers mess up with in the IMF header section, like
// Message-ID.
// - Nonstandard headers that should be DKIM-protected because e.g. OpenDKIM only signs
// known headers.
//
// The header should be hidden from MTA
// by moving it either into protected part