An error was detected while processing a file of BSMTP input

The error is commonly found when a mail is being sent. This may happen because of
1) Corrupted exim routers
2) Problem with the spamassassin

The possible fix for the error is given below.
1) Corrupted exim  - Exim has different routing configurations. These errors are
commonly seen due to corrupted routers in exim configuration file. Try reinstalling
exim with /scripts/eximup --force.

2) Problem with the spamassassin - Some filters may cause the problem. You can

also try reinstalling spam assassin.