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  • OpaCyber

Want to know if your emails are being delivered?

Didn't expect to see this happen

Two pieces of fallout following the implementation of the Google "Ban Hammer"

One of them is "Marketing" email but it isn't going to a gmail address, the other is "normal" email and IS going to gmail (we believe, it's not categorically stated)

The first:

This is what we might expect to see if the recipient was using gmail, but in this case it wasn't gmail but Proton Mail:

The second:

This is an advisory found in MS365 (Outlook) regarding non-delivery of Outlook emails:

"recent security related changes from said third parties". Couldn't be Google, could it? Only Microsoft would call Google a "third party" 🤣

If you are getting Non-delivery Reports (NDR), which most people call "a bounce-back", specifically "550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError'" you might want to sort out your email DNS

Or, if you're not comfortable doing it yourself, we're here!


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