[Mimedefang] Strange ids in headers

[scuba at centroin.com.br]

Hi all,


 	I'm seeing some strange message ids, like those bellow, and would 
like to filter based on some pattern. Is there any invalid character for 
message ids? I noticed that all of them are spam.

      id 44.H40-*(4GJV-::
      id 710I5.-6+K5/,-7;
      id ;79Y9K-F-MF9--9P
      id B-P.1G-187P88-Q5
      id '.'H7G-F,(;=0-//
      id *2*F83-SH2(0)-1)
      id Y-4CUZ-1GSR-=-40
      id Z4W9AO-P@>U).-,6
      id 76IA0+-6?41'--A3
      id O/2RC at -8FT6D4-+V
      id O0LCXL-1+19,A-3N
      id 5P*X0W-ES:B9+-.M
      id 5P*X0W-ES:B9+-.M
      id <0GCO1-S/C.FQ-,@
      id 307JWU-3UB(V5-3.
      id I.YX00-N(.-54-86
      id ,7B=2T-N.<.26-')
      id :+CRE7-Y.GWJ=-5V
      id :VX82*-1L8)-3-*:
      id +G6,P9-.)ARY;-+@
      id S0W/,B-2>>V+)-32
      id ?U1L/V-+0-6Z8-75
      id 8DS6<C-3M.A99-.C
      id 47>155-5(S0@(-)M
      id **601T-SWJKU,-9+
      id ,+'8.3-;A6'8/-*E
      id Q)CFP'-19)JA9-)4
      id .I/:0(-0<E>GM-6G
      id 10RD-Q-?=P(+ at -(0



- Marcelo