First I moved my server to a new co-lo facility, and changed the ip address. Then, because I wanted to install webmail, I upgraded to woody, which I have done on my laptop with minor problems. When I did the apt-get dist-upgrade, it uninstalled me sendmail server. After the upgrade, I went into dselect and re-installed my sendmail server. I don't get errors, it just doesn't deliver mail, not even locally. Every thing I send out, sits in the queue with the status of deferred. I set up everything the same.
Wayne