Too many open files

[Bruce Huang]

Dear all,

I did the entire search from this group and got no real answer about this
problem.

I upgraded MailScanner from 3.21 to 4.19 with Sun solaris 2.7.  All goes
well in lite traffic.

The problem is this:  during the heavy traffic, like announcement, e-mails
will be kept in /var/spool/mqueue.in, and logs said:
MailScanner[2462]: Could not open file
>/var/spool/MailScanner/incoming/2462/h3OIihSp002991.header: Too many open
files
MailScanner[2462]: Cannot create + lock headers
file /var/spool/MailScanner/incoming/2462/h3OIihSp002991.header,

The Processing Incoming Mail setting in MailScanner.conf is as following
Max Unscanned Bytes Per Scan = 100000000
Max Unsafe Bytes Per Scan = 50000000
Max Unscanned Messages Per Scan = 100
Max Unsafe Messages Per Scan = 100


Thanks for any advise.

Regards,

Bruce