Gregory's Server@selea You mean the IMAP & SMTP autoconfiguration, where you enter an email address and the program automatically figures out the servers?
Dunno about SoGo, but for Thunderbird, that was placing a static XML at https://autoconfig.$domain/mail/config-v1.1.xml
Something along these lines:
@algernon
yeah exactly like that, I actually employ autoconfig (autoconfig is for Thunderbird basically), and I need something similar in order to have exchange compatibility.