my gitlab is running on a subdomain and I’ve issues sending mail using the subdomain (like https://bla.foobar.com). If I not use the subdomain, links in mails not working like invitation mail. So I’m a bit stuck now. It has worked successful some versions below the current.
I tried to set the smtp_domain in config but no luck. The error message is
Error performing ActionMailer::MailDeliveryJob (Job ID: xxx) from Sidekiq(mailers) in 198.11ms: Net::SMTPFatalError (553 5.1.8 Sender domain not allowed
What can I do?
Thank you in advance.