what it is this? --- Running /var/spool/mqueue/q4/fBHFvlE14754 (sequence 2 of 4) <[EMAIL PROTECTED]>... Connecting to mx01.dglnet.com.br. via esmtp... 220 ncc1701.idc.dglnet.com.br ESMTP Service (NPlex 5.1.071) ready >>> EHLO guarani.applecursos.com.br 250-ncc1701.idc.dglnet.com.br 250-DSN 250-8BITMIME 250-PIPELINING 250-HELP 250-ETRN 250-AUTH=LOGIN 250-AUTH LOGIN CRAM-MD5 PLAIN 250 SIZE 10485760 >>> MAIL From:<[EMAIL PROTECTED]> SIZE=5521 BODY=8BITMIME 451 <[EMAIL PROTECTED]> unable to verify address <[EMAIL PROTECTED]>... Deferred: 451 <[EMAIL PROTECTED]> unable to verify address