I have been using the mail action to send emails triggered by rules via a gmail account. This used to work properly in the past but suddenly stopped working from June 1st.
Every time the rule tries to send a mail there is no mail sent but the following can be found in the logs instead:
2020-06-05 15:25:32.886 [WARN ] [ab.binding.mail.internal.SMTPHandler] - Sending the email to the following server failed : smtp.gmail.com:587 2020-06-05 15:25:32.888 [WARN ] [ab.binding.mail.internal.SMTPHandler] - com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.0 Must issue a STARTTLS command first.
I could not find out how to fix this. I am using Google 2 factor authentication but I have defined an application password and it used to work in the past. I have also set a new password now but it did not change.