feedmail-force-expand-mail-aliases

feedmail-force-expand-mail-aliases is a variable defined in `feedmail.el'.
Its value is

nil

Documentation:
If non-nil, force the calling of `expand-mail-aliases'.
Normally, feedmail tries to figure out if you're using mailalias or
mailabbrevs and only calls `expand-mail-aliases' if it thinks you're
using the mailalias package. This user option can be used to force
the issue since there are configurations which fool the figuring
out.

You can customize this variable.