3CX SMTP Server problem to change server type

[Mullmull]

I'm on a 3CX ISO Debian server. From November at the new release of the 3CX, my SMTP personal doesn't work more. On the Settings / Email, I have only "3CX SMTP server" and I can't change that.
Can I change that?

 

[sip.bg]

What type is your license ?
If using PBX edition, with sp2 you can only use 3CX provided SMTP server.