New Installation Help

[Will]

Hi,

I just upgraded my home server from CentOS 7 to AlmaLinux release 9.3.  
I also switched to Postfix, where I was using Sendmail.  So, everything 
seems to be working except SendMail.  Well, I have some issues with 
Dovecot but that's not important.  I'm not sure what I did wrong, but I 
get a bunch of these error messages in /var/log/maillog:

Unable to open QMQP socket at 127.0.0.1 on port 628
Unable to kick message 
/var/spool/MailScanner/milterout/5CEF610A0C47.A52CF, will retry soon...

And if enabled, MailScanner will reject every message.  But if I comment 
out the milter line in Postfix's conf file, I can get email.  Just not 
filtered...

# smtpd_milters = inet:127.0.0.1:33333

I do also have:

qmqpd_authorized_clients = 127.0.0.1
milter_default_action = accept

set in the Postfix main.cf.  Not sure if those are related.  Please 
help, I'm not at all sure what is going on here.