After two day looking around, for that error but nothing, so if any one can give me light around, will be very precciated

my log:

Jul 28 18:22:31 phamm postfix/smtpd[3494]: connect from ug-out-1314.google.com[66.249.92.169] Jul 28 18:22:33 phamm postfix/smtpd[3494]: D8FF2393A0: client=ug-out-1314.google.com[66.249.92.169] Jul 28 18:22:34 phamm postfix/cleanup[3506]: D8FF2393A0: message-id=<ad71...@mail.XXXX.com> Jul 28 18:22:34 phamm postfix/qmgr[2494]: D8FF2393A0: from=<newz...@XXXX.com>, size=1339, nrcpt=1 (queue active) Jul 28 18:22:35 phamm authdaemond: received userid lookup request: ve...@phamm.YYYY.co.ve Jul 28 18:22:35 phamm authdaemond: authldap: trying this module Jul 28 18:22:35 phamm authdaemond: using search filter: (&(accountActive=TRUE)(mail=ve...@phamm.YYYY.co.ve)) Jul 28 18:22:35 phamm authdaemond: one entry returned, DN: mail=ve...@phamm.YYYY.co.ve,vd=phamm.YYYY.co.ve,o=hosting,dc=example,dc=tld Jul 28 18:22:35 phamm authdaemond: authldaplib: sysusername=<null>, sysuserid=501, sysgroupid=501, homedir=/home/vmail/domains, address=ve...@phamm.YYYY.co.ve, fullname=Vero, maildir=phamm.YYYY.co.ve/vero/, quota=2097152S, options=<null> Jul 28 18:22:35 phamm authdaemond: Authenticated: sysusername=<null>, sysuserid=501, sysgroupid=501, homedir=/home/vmail/domains, address=ve...@phamm.YYYY.co.ve, fullname=Vero, maildir=phamm.YYYY.co.ve/vero/, quota=2097152S, options=<null> Jul 28 18:22:35 phamm postfix/pipe[3507]: D8FF2393A0: to=<ve...@phamm.YYYY.co.ve>, relay=maildrop, delay=4, status=deferred (temporary failure. Command output: terminate called after throwing an instance of 'char const*' maildrop: signal 0x06 )

my programs :

postfix-2.1.5-4.2.RHEL4 maildrop-2.0.2-1

My master.cf ( only related to maildrop )

maildrop unix - n n - - pipe flags=RDhu user=daemon argv=/usr/bin/maildrop -w 80 -d ${recipient} I tryed with other user ( vmail,mail ) but nothing.

very very rare, not information online, only the problem not a solution. Thanks in advance, newzen