I'm now getting this, with no other changes in the system, when approving messages held for moderation. Same kernel, same file handle limits as before...:

IOError writing outgoing queue exceptions.IOError/[Errno 23] Too many open files in system: '/var/lib/mailman/data/mm_q.10890.13' Traceback (innermost last): File "/var/lib/mailman/scripts/contact_transport", line 58, in ? File "/usr/lib/mailman/Mailman/OutgoingQueue.py", line 155, in enqueueMessage File "/usr/lib/mailman/Mailman/Utils.py", line 829, in open_ex File "/usr/lib/mailman/Mailman/Utils.py", line 824, in open_ex IOError: [Errno 23] Too many open files in system: '/var/lib/mailman/data/mm_q.10890.13' IOError writing outgoing queue exceptions.IOError/[Errno 23] Too many open files in system: '/var/lib/mailman/data/mm_q.10918.9' Traceback (innermost last): File "/var/lib/mailman/scripts/contact_transport", line 58, in ? File "/usr/lib/mailman/Mailman/OutgoingQueue.py", line 155, in enqueueMessage File "/usr/lib/mailman/Mailman/Utils.py", line 829, in open_ex File "/usr/lib/mailman/Mailman/Utils.py", line 824, in open_ex IOError: [Errno 23] Too many open files in system: '/var/lib/mailman/data/mm_q.10918.9' Content-type: text/html

...

Traceback (innermost last): File "/var/lib/mailman/scripts/driver", line 112, in run_main File "/usr/lib/mailman/Mailman/Cgi/admindb.py", line 112, in main File "/usr/lib/mailman/Mailman/Cgi/admindb.py", line 200, in HandleRequests File "/usr/lib/mailman/Mailman/ListAdmin.py", line 122, in HandleRequest File "/usr/lib/mailman/Mailman/ListAdmin.py", line 131, in HandlePostRequest File "/usr/lib/mailman/Mailman/MailList.py", line 1329, in Post File "/usr/lib/mailman/Mailman/Archiver/Archiver.py", line 206, in ArchiveMail File "/usr/lib/mailman/Mailman/LockFile.py", line 200, in lock File "/usr/lib/mailman/Mailman/LockFile.py", line 156, in __read IOError: [Errno 23] Too many open files in system: '/var/lib/mailman/locks/mud-dev.archiver.lock.bush.10877'

The mail (at least) does seem to get thru.

-- J C Lawrence Home: claw@kanga.nu ----------(*) Other: coder@kanga.nu --=| A man is as sane as he is dangerous to his environment |=--