[Mimedefang] Error in Filter

[Muhammad Talha]

Dear all

i have Redhat 9 system getting this error frequently error "please try again
later"

Apr  7 12:58:14 magic sendmail[23564]: i376vAw5023564: Milter (mimedefang):
timeout before data read
Apr  7 12:58:14 magic sendmail[23564]: i376vAw5023564: Milter (mimedefang):
to error state
Apr  7 12:58:14 magic sendmail[23564]: i376vAw5023564:
to=<idream at mydomain.com>, delay=00:01:01, pri
=33151, stat=Please try again later

i using the following line for milter

INPUT_MAIL_FILTER(`mimedefang',
`S=unix:/var/spool/MIMEDefang/mimedefang.sock, F=T, T=S:1m;R:1m')

i have other solaris 9 system which aslo get this same error

what is right solution my clients are quite annoyned with me :(

Thanks and Regards