  With the 'M' command, you  can  give  your local bbs where you
regularly recive your mail.
  If any user sends a msg to you and doesn't specify the bbs field,
this msg will sent to your local bbs.
If for example you type M SV7AIZ then your home bbs becomes SV7AIZ.
Suppose that  your call is 5B4TX and bbs receives a mail like this
       S 5B4TX,
then it will go and stay at SV7AIZ bbs.
The  header  of  this  mail changes to
   S 5B4TX @ SV7AIZ.
Nothing will happen if we receive the following
   S 5B4TX @ SV1IW
because the bbs field has been defined.
 
 