This ensures that the spam and antivirus filters cannot be evaded by making the message large enough.
Rspamd does not need a size limit on its own (e.g. for DoS protection) as Postfix already has a size limit (message_size_limit).
- No more premature EOF and no more leaking of bash processes
- Log result
- Correctly treat non-CIDR entries
- Adapt to schema change from df71e97
- Correctly report SQL failure