remove mail domain add/remove API

merge this as a transaction into domains API

fixes #669

src/provision.js

@@ -121,7 +121,8 @@ function setup(dnsConfig, sysinfoConfig, auditSource, callback) {
                 provider: dnsConfig.provider,
                 config: dnsConfig.config,
                 fallbackCertificate: dnsConfig.fallbackCertificate || null,
-                tlsConfig: dnsConfig.tlsConfig || { provider: 'letsencrypt-prod' }
+                tlsConfig: dnsConfig.tlsConfig || { provider: 'letsencrypt-prod' },
+                dkimSelector: 'cloudron'
             };
 
             domains.add(domain, data, auditSource, function (error) {
@@ -137,7 +138,6 @@ function setup(dnsConfig, sysinfoConfig, auditSource, callback) {
                         settings.setSysinfoConfig.bind(null, sysinfoConfig),
                         domains.prepareDashboardDomain.bind(null, domain, auditSource, (progress) => setProgress('setup', progress.message, NOOP_CALLBACK)),
                         cloudron.setDashboardDomain.bind(null, domain, auditSource),
-                        mail.addDomain.bind(null, domain), // this relies on settings.mailFqdn() and settings.adminDomain()
                         setProgress.bind(null, 'setup', 'Done'),
                         eventlog.add.bind(null, eventlog.ACTION_PROVISION, auditSource, { })
                     ], function (error) {