Hi there, hope I'm in the right place. We use OAuth to log in to a Gmail account on websites to send email via SMTP from forms. This was to get around PHPMail issues and to reduce spam. We've had this set up for years and just today we've started to get this error from all forms:
Token has been expired or revoked.(invalid_grant) What is the reason behind this? We have about 50+ Client IDs on there, all used to work fine. It's like they have unhooked themselves. Do we now need to verify every single domain? Is it because of a spam issue? Pretty desperate to get this email service back up and running. Many thanks for your time, looking forward to some ideas. Thanks -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/ca3fb8e3-44a9-49cb-8944-e142530b71b3%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
