Nextcloud Hub 3 (25.0.13) on Debian 11.8.
System is some 10 month old and sending emails has always worked. I guess that since the last update it is not possible to send email notofications (f. ex. welcomemail to new users).
With the settings in Admin => Grundeinstellungen it says “OK” and I receive the Test-Email.
When sending emails via the users => “Willkommens-Mail erneut senden” it says “sending email failed”. Logs are saying:
Swift_TransportException: Expected response code 354 but got code “554”, with message "554 5.5.1 Error: no valid recipients "
Any ideas? I tried different settings in the GUI as well as in the config.php, with no luck :\
Thanx in advance!