One of my clients was receiving the following error when logging into her twitter account:
“We’ve tried to send emails to name@address.com but they are not getting delivered, possibly because your email address is no longer valid. Click here to update your email settings, or click here to try sending messages to your email address again.”
She was not receiving any update emails when someone started following her Twitter feed.
Here is how I fixed it:
It looks like the problem stemmed from graylisting on the client’s Barracuda Mail Firewall.
I logged into the unit, clicked on “Recipient Filters” and added noreply@twitter.com to the whitelist.
The messages started to appear in her inbox.
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