Assume that I've received a mail from foo at example.com and I *don't* have the
X-Mew: <body multi> No his/her public key. ID = 0x1B8BF431
message. Pressing C-c C-f then gives me
Fetch User ID=foo at example.com? (y or n)
which always fails. It is probably better to disable C-c C-f in this
case.
Werner