Urgent help needed: mailscanner not processing mail

[Ron E.]

This is urgent, for anyone who may see this and has any ideas on a
workaround -

I am running MailScanner 4.21-4 and Postfix on RH9. All has been well for
months.

A few hours ago MailScanner stopped passing any messages to my mta - the
number of messages in postfix.in/deferred continues to rise - restarts of
mailscanner and a server reboot have not rectified the situation.
Occasionally some mail gets passed to my mta but very little and the
backlog continues to mount. Also numerous entries in the maillog that say
things like:

Nov  4 03:41:16 smtp postfix/qmgr[2196]: BF97D160A3D: skipped, still being
delivered

Any ideas would be welcome.

Thanks!

-Ron