strange error in cgi script using sendmail

[sstark]

Recently I started receiving the following error in my CGI scripts,
which contain a sendmail call:

prog_map_lookup(scriptfilter): child died on signal 25

These scripts have been running fine for years and suddenly this
started happening. The bottom line, of course, is that I get an
Internal Server Error every time someone tries to use one of the
scripts from a web browser. Any idea what this error means?

Here's a typical snippet from one of my scripts that is suddenly
producing this error.

open(MAIL, "|/usr/sbin/sendmail -t $mailto")
|| on_error("Can't open mail program.");
print MAIL "To: $mailto\n";
print MAIL "From: Tester McProblem <$mailfrom>\n";
print MAIL "Subject: email test\n\n";

print MAIL "\nBody of test message\n";

close(MAIL);

Any help would be greatly appreciated.

Scott Stark

 

[sstark]

Thanks for the explanation Chris! That's very helpful knowing it's
some error with my ISP.

Scott