Hi @Sathiya Prasannaa , welcome to the Community!
Our email delivery service registered this error from your mail server when attempting to deliver email:
451 relay not permitted!
In your case, I think it's likely that your email service provider needs to have the IP ranges we use for our mail service added to its allowlist, or possibly explicitly removed from its blocklist. The list of IP addresses we use for mail delivery from Atlassian and Bitbucket Cloud are available at this link. I've removed a pause in delivery attempts from our mail service, but it's possible that our mail system might pause further delivery attempts to your address if you try to resend the invitation without first correcting the issues at your mail server / mail provider.
Daniel | Atlassian Support
We are excited to announce the open beta program for self-hosted runners. Bitbucket Pipelines Runners is available to everyone. Please try it and let us know your feedback. If you have any issue...
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