Why doesn't mutt know me anymore?

[Jeff Howie]

I have the author's name specified in my index_format as '%F', which
according to the mutt help is 'author name, or recipient name if the
message is from you'. But the index still shows my name ('Jeff Howie')
for emails that I've bcc'd back to myself.

My email address is no longer the same as my userid on my linux pc,
but it used to be, and I remember this working properly then. So I
tried setting the realname variable to different strings, to no affect
so far. Am I on the right track?

thks.jeff