On a system upgraded to sendmail-8.11.2-1 from 7.0.80, mail was being accepted from outside and queued for delivery, but local delivery was not happening. Checking /var/spool/mqueue, there were around 100 messages not delivered over the course of about four hours. After downgrading sendmail to 8.11.0-8, delivery of queued messages occurred, and new mail was delivered correctly.
This defect is considered MUST-FIX for Florence Beta-3
*** Bug 24003 has been marked as a duplicate of this bug. ***
*** Bug 24077 has been marked as a duplicate of this bug. ***
*** Bug 24435 has been marked as a duplicate of this bug. ***
Fixed in newst rpm.