The following is an announcement from the Yahoo Mail Postmaster Team :
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If you're seeing some queuing in your outbounds today when sending to Y! users, we're currently experiencing low connectivity across our MTAs, which started this morning. We're working to get things back to normal. The SMTP error message being generated by the issue should be: "420 Resources unavailable temporarily. Please try later <insert Y! MTA hostname>"Our apologies for the inconvenience.
Best regards,
Carlo
Yahoo! Mail
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If you're seeing some queuing in your outbounds today when sending to Y! users, we're currently experiencing low connectivity across our MTAs, which started this morning. We're working to get things back to normal. The SMTP error message being generated by the issue should be: "420 Resources unavailable temporarily. Please try later <insert Y! MTA hostname>"Our apologies for the inconvenience.
Best regards,
Carlo
Yahoo! Mail