On Wed, 28 Oct 2009 14:38:12 -0500 Noel Jones <njo...@megan.vbhcs.org> wrote:
> I say put on your somber face and agree that Hotmal is goofed > up, hope they fix it soon. My experience with Hotmail and other major web mail vendors is that they are too busy finding new and innovative ways to break email interconnectivity to persist in any individual strategy for a significant period of time. That said, I seem to recall that providing a text/plain part for all mail is best practice for M*U*As. If you want to enforce this at the M*T*A level then I doubt there is an off the shelf solution. So that you know what's involved... You'll need Lynx 2.8.6+ for HTML dump with -nomargins and -notitle switches, "path/lynx -dump -stdin -nolist -nomargins -notitle". You have to walk the MIME structure of the message to determine that there is a text/html part that does not have a corresponding text/plain part, decode and render the text/html part, build a text/plain part, build a multipart/alternative mime section and insert it into the mail message in place of the text/HTML part. An object-oriented library may manage MIME boundaries for you, but most scripting languages will let you handle that little detail yourself. Identifying MIME boundaries with a regex is non-trivial in practice. Python mimelib is adequate, but I find the load time for the Python interpreter to be prohibitive for mail filters, so that approach leads you into scope creep with time spent building an SMTP relay or worse. I have something that appears to work with the TRE regex library in CRM-114. The top Google result for "perl mime parser" describes MIME::Parser as an "experimental class for parsing MIME streams". Overall, not a promising lot. Chris
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