Bypass IP or email address rejected by connection classification

Hello everyone

My client try to send me some email notifications (from apache web server, php function), but emails rejected by MTA.

Verdict:  Filter policy - static connection class 1 

Client IP address have a good reputation, but email notifications haven't define "send from" address.

Gmail, hotmail, yahoo...regulary receive emails from this client.

I tried to add client IP in good sender IP list, but still have a problem and emails are rejected again.

Is there a way to configure my SMG to receive emails from this IP ?

I wouldn't disable connection classification feature.