LE Cert Generation Error Handling

[YurkoWasHere]

/usr/local/sbin/press-publish has no error handling between runs. This causes LE to hit "too many failed authorizations" and possibly other triggers.

An unexpected error occurred:
There were too many requests of a given type :: Error creating new order :: too many failed authorizations recently: see https://letsencrypt.org/docs/failed-validation-limit/

In this case ipv6 was set wrong, and LE certificates where failing for all domains for months.

Suggestion:
When an LE cert fails, dump the log of the error into a file somewhere, and dont re-run the certificate while the file exists (like a lock file).

Maybe include a timestamp to automatically retry every hour or so for automatic recovery, but not every 5 mins like the cron job does.