Hi Frank
Please take a screenshot from that rule and upload here.
And second, to further assisst please set smtp-in and processing module log level on “Protocol communication”:
WEBADMIN > SERVICES > SMTP Receiving > Service Configuration > Logging
and
WEBADMIN > QUEUE > Processing > Service Configuration > Logging
Then send a test email and attach the log file.
by default logs stores in :
[axigen/working/directory]/log/everything.txt