[exim] Queue not moving

Hi all

I've inherited a server with exim installed and so I don't know quite a
lot about it yet.

One problem I'm having that I need to fix urgently is that the queue is
barely moving.

I've tried flushing the queue with -qff however that made no difference.

I've tried exiqgrep -i but nothing is listed.

Any ideas? This queue is now up to 180k.

BG