I’m trying to configure a nextcloud instance to send emails using our mailserver. I’ve entered in the details, and I’m confident that they are correct, but when I use the
Test Email Settings button I get the following error:
A problem occurred while sending the email.
Please revise your settings.
(Error: Failed to authenticate on SMTP server with username
"firstname.lastname@example.org" using 0 possible authenticators)
Zero authenticators sounds like something vital is missing on my installation.
Nextcloud is running on an Ubuntu 16.04 machine.
Thanks for the help
I am having the same issue! I am running the following:
Nextcloud 13.0.5 (on prem)
PHP version: 7.0.28-0
I have an onsite Exchange server and admin access. I have tried a security account that I created for the nextcloud credentials as well as my own domain admin credentials.
The only configuration under Additional Settings - Email server that work are when I UNCHECK Authentication required BUT THIS WILL ONLY SEND EMAIL NOTIFICATIONS TO INTERNAL EMAIL ADDRESS. no outside email (e.g. @yahoo.com)
When I select:
Send Mode: SMTP
Authentication method: Login
Authentication required: checked
Server address: (my smtp server) PORT 25 (also tried 565)
credentials: my domain admin account and also tried service account for nextcloud
I hit SEND MAIL and I get the following error:
“A problem occurred while sending the email. Please revise your settings. (Error: Failed to authenticate on SMTP server with username “nextcloudadmin” using 0 possible authenticators)”
I have to have this working for external email address’ to be able to send clients links to upload/download files with a password protected link.
Any update on this threat