[exim] 3.20 to 4.42 upgrade problem

Hi

I am having a little bit of a problem upgrading from 3.20(RPM) to 4.42.
I still have the old RPM installed and am testing the new binary on a
different port. I compiled 4.42 and the binary seems to build and
install okay. I run the new binary with the same options as the rpm
built exim. I can send a message and exim accepts it. When the message
is for a remote domain the mail is sent okay. But when it is a local
delivery, it stops in the queue. All local messages stay in the queue
until I type 'runq' as root, then the local delivery completes. There
is nothing obvious to me in the logs. I am assuming that it is a
permissions error somewhere.

Can anybody please enlighten me as to what I've done wrong.

Thanks in advance

Kev