Hello, how to solve this problems in PMG?
Reporting-MTA: dns; proxmox.pmgteste.com
Action: failed
Final-Recipient: rfc822;sonixxxxxxx@gmail.com
Status: 5.0.0
Remote-MTA: dns; 192.xxx.xx.xx
Diagnostic-Code: smtp; 552 5.3.4 Message size exceeds fixed limit
Reporting-MTA: dns; proxmox.pmgteste.com
Action: failed
Final-Recipient: rfc822;sonixxxxxxx@gmail.com
Status: 5.0.0
Remote-MTA: dns; 192.xxx.xx.xx
Diagnostic-Code: smtp; 552 5.3.4 Message size exceeds fixed limit