John Levine writes: > From what I can see on the mailman lists, looking for the internal > DKIM signatures won't work too well, since mailman sometimes > removes parts from multipart/alternative to fix to some formatting > issue.
Mailman implements certain MIME structure manipulations as a per-list policy setting. Specifically, as a simple antivirus and resource conservation measure, disallowed MIME types are removed. I think this is a deal-breaker for DKIM signatures, as MTAs aren't supposed to break into MIME structure, and I don't think most sites want their users doing signatures in the MUA. But there is exactly one case where Mailman tries to fix up content for formatting: at the list owner's option, if the only text part is text/html, an external utility (usually lynx) may be used to convert it to atext/plain. There are third party patches that actually try to manipulate formatted text. A typical example is one to allow the footer to be added *inside* the BODY element of a text/html part. But AFAIK none have made into the mainline. _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
