as a quick test, change contents of
/usr/lib/tmpfiles.d/fetchmail.conf
to
d /var/lock/fetchmail 0755 qmailr qmail
restart and let have it
+Added: new update does that
I did the edit with nano.
All seems OK on the restart. No cron emails, the catch all is collecting. Email appears to be sorted to the correct accounts. The other pop collection in 'mail retrieval' seems to be OK (but just testing again).
I think that would appear all to be working.
I'll let this run for a while before rebuilding it again and going live. Will this change pick up automatically now with the new update ?