[exim] Panic in 4.43, too many files open

Hi,

We are regularly receiving the following panic in our Exim 4.43 logs:

2005-01-27 20:56:48 failed to open /usr/local/adm/exim/localdomains when checking "localhost : /usr/local/adm/exim/localdomains": Too many open files

We're running Solaris 8 with rlim_fd_cur/rlim_fd_max set to 1024, on a
slightly loaded system that processes about 200,000 deliveries per day.

The output of "ulimit -n" for all users is 1024, and the output of
"plimit -k" on the master exim process shows nofiles=2048 (why it
shows 2048 instead of 1024 I don't know).

This error occurs on all four of our Sun systems running Exim 4.43.

Any ideas?

--
Dean Brooks
dean@???