Hi, i have updated to PRTG 22.214.171.1244. After update SMTP Delivery stopped working. It seems like PRTG ignore the setting of SMTP Relay Port. In my case it is set to SMTP Relay Port: 587
But if i trace by wireshark, i see, that connection to mailserver will be made by destination_port: 25. It seems like, my custom port is ignored.