Good evening guys, I installed OsTicket version 1.15 with php version 7.4.13. I am finishing the configuration of the email address to forward the welcome emails after opening the ticket. Whenever I try to configure my address I get the following error.
Operating system is Windows Server 2019 and web server IIS.
I always unchecked spoofing but result are the same.
May you help me?
Thanks in advance.