using pipe channel for msg delivery

Hi did set the attributes maildeliveryoption: program and mailprogramdeliveryinfo: myprocmail, in a group and user.

If someone sent and email to the user the program is execute and the email is delivered. seems to be working as the mail.log shows:

26-Oct-2006 16:31:20.57 tcp_intranet pipe E 1 gol@domain.com rfc822;dos@domain.com dos%myprocmail@pipe-daemon 20 /opt/SUNWmsgsr/data/queue/pipe/009/ZZf0i140Dy_sl.01 <fd2cee2923a9.4540e2d8@domain.com> domain.com ([127.0.0.1])

26-Oct-2006 16:31:22.42 pipe D 1 gol@domain.com rfc822;dos@domain.com dos%myprocmail@pipe-daemon 20 /opt/SUNWmsgsr/data/queue/pipe/009/ZZf0i140Dy_sl.01 <fd2cee2923a9.4540e2d8@domain.com>

BUT WHEN IT SENT TO A GROUP THE MESSAGE INS'T DELIVERED.

26-Oct-2006 16:24:27.75 tcp_intranet pipe E 2 gol@dominio.com rfc822;cactus@dominio.com %myprocmail@pipe-daemon 20 /opt/SUNWmsgsr/data/queue/pipe/016/ZZf0i140BQwS1.00 <fd2c8b9d7c22.4540e13b@dominio.com> dominio.com ([127.0.0.1])

Any idea?

[1017 byte] By [bootbk] at [2007-11-26 11:04:58]