when i receive mail from some MTA's (there seems to be no pattern as to which ones) and this msg is logged, no STARTTLS is established and i receive the mail in the clear
the file verify_cache.db does exist is it ok to delete this, restart postfix and see what happens next time? -rw-r--r-- 1 postfix postfix 8192 Sep 26 18:55 /var/lib/postfix/verify_cache.db postfix/verify[16799]: cache btree:/var/lib/postfix/verify_cache full cleanup: retained=2 dropped=0 entries postfix/verify[16799]: close database /var/lib/postfix/verify_cache.db: No such file or directory (possible Berkeley DB bug)