ostfix mail delivery issue - Please Help

Hi guys,

We are running an openbsd system with Postfix and we currently have over 10,000 messages in the queue and growing with an "out of memory" eror message appended to them. I have had a look at the system memory and it appears that there is sufficient memory, swap space etc., available to run processes. How can we fix this memory issue so that these message will go through. Any help will be greatly appreciated. thanks in advance..

cheers,