Hi,
We've been struggling with an issue for a little while where the Admin Notification BCC field has been working for certain email addresses and not for others. One email addresses will not receive an email even if it's set as site admin. We've checked filters and spam folders for those addresses and they're empty, indicating that it's not a blacklist/bounce issue; those mails aren't being sent.
Any idea what might be causing this behavior? The addresses not receiving are .net and .org domains, although another .net address works fine.