Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-20 Thread Stephen J. Turnbull
Grant Taylor writes: On 1/19/2009 10:19 PM, Taylor, Grant wrote: I will play with forwarding an S/MIME signed / encrypted message and let you know what my MUAs (of choice) do with the message/rfc822 MIME body part. This isn't really relevant to Mailman, though. MIME messages are by

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-20 Thread Grant Taylor
On 01/20/09 03:46, Stephen J. Turnbull wrote: This isn't really relevant to Mailman, though. MIME messages are by design recursively structured, and MUAs that claim to support S/MIME should be able to handle recursive structure. The only responsibility Mailman has or should accept is to

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-20 Thread Stephen J. Turnbull
Grant Taylor writes: I'll agree with you on Mailman's responsibility. However in 10+ years of computer work I can assure you that there is quite a bit of software out there that /claims/ to do something but falls short of that claim. ;) Sure. Why Mailman *should* make up for other

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-19 Thread Grant Taylor
On 01/16/2009 04:43 PM, Brad Knowles wrote: I don't think it broke the signature, I think what happened is that it hasn't been encapsulated in the correct manner. *nod* At the very least, you can do a message/rfc822 bodypart, and that should guarantee that the signature is not broken,

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-19 Thread Grant Taylor
On 01/16/2009 08:40 PM, Mark Sapiro wrote: Note that just sticking the header and footer as additional parts into an original multipart, not_mixed message can't be arbitrarily done. Clearly, if the original is multipart/alternative, this won't work and if it is multipart/signed, it would

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-19 Thread Grant Taylor
On 1/19/2009 10:19 PM, Taylor, Grant wrote: I will play with forwarding an S/MIME signed / encrypted message and let you know what my MUAs (of choice) do with the message/rfc822 MIME body part. I just sent my self an S/MIME signed message and then forwarded it as an attachment

[Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Barry Finkel
I have a collegue who is experimenting with signed mail (S/MIME). He sent me a test mail and he also sent it to a test Mailman (2.1.11) list. Here is the basic MIME header structure for the mail sent directly to me: ++ MIME-Version:

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Grant Taylor
On 01/16/09 15:46, Barry Finkel wrote: Note that Mailman has taken the existing three-part MIME structure (plain-text body, HTML-formatted body, and digital signature) and instead of placing the list footer as a fourth part in the same MIME structure, Mailman has created a new two-part MIME

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Brad Knowles
Grant Taylor wrote: I think the more proper thing would be for something (Mailman or it's MTA interface / handler) to validate S/MIME signed messages and process them before passing them on. Validation could be useful, but the more important issue is to have Mailman completely encapsulate

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Grant Taylor
On 01/16/09 16:27, Brad Knowles wrote: Validation could be useful, but the more important issue is to have Mailman completely encapsulate signed/encrypted messages and then add whatever additional MIME bodyparts may be necessary to complete the other parts of the work it has been configured to

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Brad Knowles
Grant Taylor wrote: Don't change anything at all in any of the signed/encrypted part, just treat it as an opaque object and encapsulate the whole thing. It sounded like that is what Mailman already did and that by doing so broke the signature. I don't think it broke the signature, I think

Re: [Mailman-Users] Preserving S/MIME-Encoded Mail

2009-01-16 Thread Mark Sapiro
Barry Finkel wrote: Note that Mailman has taken the existing three-part MIME structure (plain-text body, HTML-formatted body, and digital signature) and instead of placing the list footer as a fourth part in the same MIME structure, Mailman has created a new two-part MIME structure with the