I have the same problem. Test mails work fine but real delivery doesn’t even start…
Log:
18-05-2017 05:59:38 - FATAL - m: 6,7 MB, u: 0 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and id>0 order by id limit 8' at line 1
18-05-2017 06:02:15 - FATAL - m: 9,5 MB, u: 1 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and id>0 order by id limit 8' at line 1
18-05-2017 06:04:24 - FATAL - m: 6,7 MB, u: 0 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and id>0 order by id limit 8' at line 1
18-05-2017 06:09:29 - FATAL - m: 6,7 MB, u: 0 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and id>0 order by id limit 8' at line 1