Hello, Thanks for testing this clarifying things about PGP/MIME and I apologize for wasting your time with it. It looks like a SPAM filtering service I use is re-writing some parts of some plain text messages with some special/alternate encoding characters (not sure what it really is). Anyway, if I manually export/import a message from gmane (bypassing my e-mail SPAM filter), thunderbird/enigmail is not having problems verifying signatures. I guess I never realized this before because all other signed messages I normally receive are encrypted and the SPAM filter does not mess with non plain text data. Andy Schroder On 06/10/2015 03:43 PM, Peter Todd wrote: > On Wed, Jun 10, 2015 at 03:36:42PM -0400, Andy Schroder wrote: >> It's possible that the enigmail extension is not working right, but >> I was under the impression that it is just feeding data to gpg and >> then receiving the response back. It's possible that your e-mail you >> just checked was not sent through mailman since I also replied >> directly to you explicitly (in which case the message has not been >> modified) and you probably have the setting in the mailing list set >> to not send duplicate messages if you are an explicit TO. I just >> deleted all explicit TOs for this message, so everyone should be >> receiving it through the mailing list and not directly. Is the >> signature still valid for you now? I think enigmail can handle > It has perfectly valid signatures, as do your earlier messages to the > list. > >> messages with some signed and unsigned content, and maybe PGP/MIME >> inherently does not support this and a mailing list re-writing parts >> of messages is an expected action? If this message re-writing is an >> expected action and I'm correct that PGP/MIME does not support >> partially signed content, then maybe it is just a recommendation for >> this mailing list to not use PGP/MIME for messages sent to the list? > PGP/MIME definitely does support partially signed content. >