Problems after upgrade from 4.85 to 5.03

[Daniel Malmgren]

Hi
I've upgraded from mailscanner 4.85 to 5.03 and I think I need some help 
with getting things going after the upgrade. I'm running postfix so I 
have got things set up as per instruktions on 
https://www.mailscanner.info/postfix/. After the upgrade I got 
permissions problems, so now I've changed "Run As Group" to mtagroup and 
"Incoming Work Permissions" to 0660 which made all errors go away and a 
check with --lint returns all fine. Now it seems though that MailScanner 
processes the same messages again and again, like it's stuck in a loop, 
see log snippet below. The messages seem to stay in postfix's hold queue.

Oct 11 09:29:39 cube MailScanner[10550]: MailScanner Email Processor 
version 5.0.3 starting...
Oct 11 09:29:39 cube MailScanner[10550]: Reading configuration file 
/etc/MailScanner/MailScanner.conf
Oct 11 09:29:39 cube MailScanner[10550]: Reading configuration file 
/etc/MailScanner/conf.d/README
Oct 11 09:29:40 cube MailScanner[10550]: Read 501 hostnames from the 
phishing whitelist
Oct 11 09:29:40 cube MailScanner[10550]: Read 19224 hostnames from the 
phishing blacklists
Oct 11 09:29:40 cube MailScanner[10550]: Config: calling custom init 
function SQLBlacklist
Oct 11 09:29:40 cube MailScanner[10550]: Config: calling custom init 
function SQLWhitelist
Oct 11 09:29:40 cube MailScanner[10550]: Config: calling custom init 
function MailWatchLogging
Oct 11 09:29:41 cube MailScanner[10550]: Using SpamAssassin results cache
Oct 11 09:29:41 cube MailScanner[10550]: Connected to SpamAssassin cache 
database
Oct 11 09:29:41 cube MailScanner[10550]: Enabling SpamAssassin 
auto-whitelist functionality...
Oct 11 09:29:48 cube MailScanner[10538]: Connected to Processing 
Attempts Database
Oct 11 09:29:48 cube MailScanner[10538]: Found 2 messages in the 
Processing Attempts Database
Oct 11 09:29:48 cube MailScanner[10538]: Using locktype = flock
Oct 11 09:29:48 cube MailScanner[10538]: Making attempt 4 at processing 
message 9CC2E45321.A7F02
Oct 11 09:29:48 cube MailScanner[10538]: New Batch: Scanning 1 messages, 
14245 bytes
Oct 11 09:29:49 cube MailScanner[10538]: Virus and Content Scanning: 
Starting
Oct 11 09:29:52 cube MailScanner[10550]: Connected to Processing 
Attempts Database
Oct 11 09:29:52 cube MailScanner[10550]: Found 2 messages in the 
Processing Attempts Database
Oct 11 09:29:52 cube MailScanner[10550]: Using locktype = flock
Oct 11 09:30:41 cube MailScanner[10632]: MailScanner Email Processor 
version 5.0.3 starting...
Oct 11 09:30:41 cube MailScanner[10632]: Reading configuration file 
/etc/MailScanner/MailScanner.conf
Oct 11 09:30:41 cube MailScanner[10632]: Reading configuration file 
/etc/MailScanner/conf.d/README
Oct 11 09:30:41 cube MailScanner[10632]: Read 501 hostnames from the 
phishing whitelist
Oct 11 09:30:42 cube MailScanner[10632]: Read 19224 hostnames from the 
phishing blacklists
Oct 11 09:30:42 cube MailScanner[10632]: Config: calling custom init 
function SQLWhitelist
Oct 11 09:30:42 cube MailScanner[10632]: Config: calling custom init 
function MailWatchLogging
Oct 11 09:30:42 cube MailScanner[10632]: Config: calling custom init 
function SQLBlacklist
Oct 11 09:30:43 cube MailScanner[10632]: Using SpamAssassin results cache
Oct 11 09:30:43 cube MailScanner[10632]: Connected to SpamAssassin cache 
database
Oct 11 09:30:43 cube MailScanner[10632]: Enabling SpamAssassin 
auto-whitelist functionality...
Oct 11 09:30:54 cube MailScanner[10632]: Connected to Processing 
Attempts Database
Oct 11 09:30:54 cube MailScanner[10632]: Found 2 messages in the 
Processing Attempts Database
Oct 11 09:30:54 cube MailScanner[10632]: Using locktype = flock
Oct 11 09:33:09 cube MailScanner[10550]: Making attempt 5 at processing 
message 9CC2E45321.A7F02
Oct 11 09:33:09 cube MailScanner[10550]: New Batch: Scanning 1 messages, 
14245 bytes
Oct 11 09:33:09 cube MailScanner[10550]: Virus and Content Scanning: 
Starting

Since I don't get any errors I don't really where to continue looking. 
Anyone see anything obvious?

I'm using MailWatch, Debian 8.6 and postfix 2.11.3.

/Daniel