Generally speaking, "Safe= Yes" lists operate as per the Internet canons.
The MAIL FROM:  address is set to the owner-listname  mailbox and this is
where  all delivery  errors are  supposed to  be sent.  Consequently, the
filter that  checks for postmaster@*, root@*  and so on is  disabled with
the result that  you can get loops  with mailers that don't  do what they
are told.  This seems to include  AOL.COM as well. You  can code "Filter=
Safe" or "Filter= Also,postmaster@*" or whatever you need. Check the 1.7f
release notes for more information.
 
  Eric