I'm using an old LDAP system from ClearOS, it stores email identities as the name part only. When I try to use those identities it allows me to pick the name and send the email but does not append the domain to the address so in the sent folder I have <identity>@unspecified-domain

This is my ldap config

    SOGoUserSources = (
        {
            type = ldap;
            CNFieldName = cn;
/*            IDFieldName = cn;*/
            MailFieldNames = (
                mail,
                clearMailAliases
            );
            UIDFieldName = uid;
            baseDN = "ou=Users,ou=Accounts,dc=therobinsonfamily,dc=net";
            bindDN = "cn=manager,ou=internal,dc=therobinsonfamily,dc=net";
            bindFields = (
                uid
            );
            bindPassword = redacted;
            canAuthenticate = YES;
            displayName = "Local Addresses";
            filter = "(objectClass = clearMailAccount)";
            id = public;
            isAddressBook = NO;
            hostname = ldaps://gateway.clarkconnect.lan:636;
        }

I'd like a way of appending the domain so it records the outgoing email correctly.

I'm certain it worked way back in Sogo v2